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A D V A N C E   P R O G R A M M E    |   P R O G R A M M E   P R E L I M I N A I R E

Nice Acropolis, Nice, France

10-15 September 2000

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 . CLEO/Europe-IQEC 2000
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CLEO/Europe-IQEC Technical Program - MONDAY

12 - 14 September, Nice Acropolis, Nice, France

 

MONDAY

TUESDAY

WEDNESDAY

THURSDAY

FRIDAY

TUESDAY POSTERS WEDNESDAY POSTERS THURSDAY POSTERS

 

ROOM 2
 
08:30 - 10:30
Session CMA: Yb3+ Lasers
Presider: Heinz Weber, University of Bern, SWITZERLAND
 
CMA1 8:30 - 8:45
Yb:GdCOB, a New Crystal for sub-100-fs Diode-Pumped Lasers, Frederic Druon, Francois Balembois, Patrick Georges, Alain Brun, Institut d'Optique, Orsay , FRANCE, A. Courjaud, C. Hoenninger, Francois Salin, Universite Bordeaux 1, Talence , FRANCE, A. Aron, F. Mougel, Gerard Aka, D. Vivien, ENSCP, Paris 05, FRANCE
We present a 90-fs, at 1046 nm, passively mode-locked diode-pumped laser using a Yb:GdCOB crystal.
 
CMA2 8:45 - 9:00
1.1-W Femtosecond Diode-Pumped Yb:KGd(WO4)2 Laser, F. Brunner, J. Aus der Au, G.J. Spuehler, L. Krainer, ETH Hoenggerberg, Zurich, SWITZERLAND, Rudiger Paschotta, Swiss Federal Institute of Technology, Zurich, SWITZERLAND, F. Morier-Genoud, Ursula Keller, Swiss Federal Institute of Technology, Zurich, SWITZERLAND, N. Lichtenstein, JDS Uniphase AG, Zuerich, SWITZERLAND, S. Weiss, JDS Uniphase AG, Zuerich, SWITZERLAND, Christoph Harder, JDS-Uniphase Corp., Zurich, SWITZERLAND, A.A. Lagatsky, Belarus State Polytechnical Academy, Minsk, BELARUS, A. Abdolvand, Belarus State Polytechnical Academy, Minsk, BELARUS, N.V. Kuleshov, Belarus State Polytechnical Academy, Minsk, BELARUS
We present to our knowledge the first diode-pumped, passively mode locked Yb:KGW laser. We obtain 1.1W average power in pulses of 176 fs and a peak power of 64 kW using a semiconductor saturable absorber mirror as a mode locker.
 
CMA3 9:00 - 9:15
3-W, Diode-Pumped, Tunable, CW Yb:GdCOB Laser, Sebastien Chenais, Frederic Druon, Francois Balembois, Patrick Georges, Alain Brun, Institut d'Optique, Orsay, FRANCE, M. Zavelani-Rossi, CNRS, Palaisseau, FRANCE, F. Auge, Laboratoire d'Optique Appliquee, Palaiseau, FRANCE, J.P. Chambaret, LOA-ENSTA, Palaiseau , FRANCE, F. Mougel, Gerard Aka, D. Vivien, ENSCP, Paris 05, FRANCE
We present a diode-pumped Yb:GdCOB laser producing 3.2W CW at 1043 nm with a slope efficiency of 68% and an optical-to-optical conversion efficiency of 36%.
 
CMA4 9:15 - 9:30
Power-Scalable Femtosecond Thin Disk Yb:YAG Lasers, Rudiger Paschotta, Swiss Federal Institute of Technology, Zurich, SWITZERLAND, G.J. Spuehler, J. Aus der Au, ETH Hoenggerberg, Zurich, SWITZERLAND, Ursula Keller, Swiss Federal Institute of Technology, Zurich, SWITZERLAND, M. Moser, CSEM SA, Zuerich, SWITZERLAND, S. Erhard, M. Karszewski, Adolf Giesen, Universitaet Stuttgart, Stuttgart, GERMANY
A thin disk Yb:YAG laser, mode-locked with a semiconductor saturable absorber mirror, generates 730-fs pulses with as much as 16 W average power and 560 kW peak power. The concept allows for further power scaling.
 
CMA5 9:30 - 9:45
Comparison of Yb3+ Doped Silicate Crystalline Hosts for the 1 µmLaser Oscillation, P.H. Haumesser, R. Gaumé, B. Viana, Gerard Aka, D. Vivien, ENSCP, Paris 05, FRANCE, B. Ferrand, CEA Grenoble/LETI, Grenoble, FRANCE
Laser effect around 1 µm have been demonstrated under T1:SA pumping in three different Yb3+ doped crystalline silicate hosts. The results are analysed taking into account the thermal and spectroscopic properties as well as the crystal field stength of the matrices.
 
CMA6 9:45 - 10:00
Dependence of Yb:KYW Minilaser Performance on Yb Concentration, A.N. Kuzmin, A.A. Demidovich, G.I. Ryabtsev, National Academy of Sciences of Belarus, Minsk, BELARUS, M.B. Danailov, Sincrotrone-Trieste, Trieste, ITALY, W. Strek, Polish Academy of Sciences, Wroclaw, POLAND, A.N. Titov, Russian Academy of Sciences, St. Petersburg, RUSSIA
CW and Q-switched LD pumped KY(WO4)2:Yb3+ with ytterbium concentration of 5%,10%,and 20% laser operation have been investigated and the main characteristics of the KY(WO4)2:Yb3+ laser are presented. A maximum slope of efficiency of 66% was achieved for this active medium.
 
CMA7 10:00 - 10:30 (Invited)
Pulsed Thin Disk Lasers, Daniel Mueller, S. Erhard, M. Larionov, Adolf Giesen, Universitaet Stuttgart, Stuttgart, GERMANY, I. Johannsen, Deutsches Zentrum fur Luft-und Raumfahrt e.V., Stuttgart, GERMANY, K. Contag, Forschungs. fuer Strahlwerkzeuge mbH, Stuttgart, GERMANY
Results for Nd:YAG and Yb:YAG Q-switched and mode-locked high power thin disk lasers and pulse amplifiers will be reported.
 
 
11:00 - 12:30
Session: Nonlinear Beam Propagation and Shaping
Presider: Eric Freysz, Universite Bordeaux, FRANCE
 
CMG1 11:00 - 11:15
Singly-Resonant Parametric Oscillation in Periodically Poled KTiOPO4 Pumped by Bessel Beam, Valdas Pasiskevicius, , H. Karlsson, J. Tellefsen, Fredrik Laurell, Royal Institute of Technology, Stockholm, SWEDEN, R. Butkus, V. Smilgevicius, Algis Piskarskas, Vilnius University, Vilnius, LITHUANIA
Generation of a single signal-idler pair with the diffraction-limited idler produced in the axial direction is demonstrated in PPKTP OPO pumped by Bessel beam. The OPO output tuning,energetics and dynamics will be discussed.
 
CMG2 11:15 - 11:30
Second Harmonic Generation of Bessel Vortex, A. Matijosius, Algis Piskarskas, V. Smilgevieius, A. Stabinis, Vilnius University, Vilnius, LITHUANIA
Second harmonic generation of Bessel vortex (J1 beam) in nonlinear crystal has been investigated. The double charged vortex decay into two singly charged vortices was observed.
 
 
CMG3 11:30 - 11:45
Reconfigurable Beam Shaping in Parametric Wave Mixing, Gabriel Molina-Terriza, Lluis Torner, Universitat Politecnica de Catalunya, Barcelona, SPAIN
A new method that allows the simultaneous frequency-doubling and shaping of a Gaussian input beam into a variety of light patterns is reported. The method is based on the dynamical evolution of vortices in seeded second-harmonic generation
 
CMG4 11:45 - 12:00
Reconstruction of Blurred Images Via Controlled Spatial - Solitons Formation, A. Bramati, W. Chinaglia, S. Minardi, Paolo Di Trapani, Universita degli Studi dell'Insubria, Como, ITALY
Diffracted digital images are reconstructed by exciting spatial solitons in a bulk X2 Crystal, in regime of single-pass parametric amplification of the quantum noise.
 
CMG5 12:00 - 12:15
Features of Dark Spatial Optical Solitons in Planar Waveguides on Lithium Niobate, V. Shandarov, State Univ of Control Sys & Radioelectronics, Tomsk, RUSSIA, Detlef Kip, Monika Wesner, J. Hukriede, Universitaet Osnabrueck, Osnabrueck, GERMANY
Formation of dark photovoltaic spatial solitions in specially doped by iron or copper planar optical waveguides in lithium niobate has been experimentally investigated and discussed
 
 
CMG6 12:15 - 12:30
Generation of Spatial Solitons in Narrow-Gap Semiconductors, V. Skarka, Universite d'Angers, Angers 1, FRANCE, V.I. Berezhiani, Institute of Physics, Tbilisi, GEORGIA
Dynamics of the self-trapping of short laser pulses in narrow-band-gap semiconductors is studied. The nonparabolicity of the conduction band leads to a nonlinear dielectric response with saturating nonlinearity. Due to the nonlinearity saturation the pulse can be trapped in a self-generated guide, and the formation of stable two-dimensional spatial solitons can take place.
 
ROOM 3
 
08:30 - 10:30
Session: Generation and Application of Ultrashort Pulses
Presider: Gunter Steinmeyer, Swiss Federal Institute of Technology, SWITZERLAND
 
CMB1 8:30 - 8:45
Mirror Design to Facilitate Fabrication of a Ultra-Short Pulse Ti:Sapphire Oscillator, Hideyuki Takada, Masayuki Kakehata, Kenji Torizuka, Electrotechnical Laboratory, Ibaraki, JAPAN
We design a mirror, which has the layers with optical thickness of more than 100 nm and the potential dispersion for sub-6 fs Ti:sapphire oscillator. The dispersion characteristics can be allevaited by utilizing three kinds of materials to a mirror.
 
CMB2 8:45 - 9:00
Double-Chirped Mirror Pairs Covering One Octave of Bandwidth, Uwe Morgner, R. Ell, Thomas Schibli, P. Wagenblast, F.X. Kaertner, University of Karlsruhe, Karlsruhe, GERMANY, James Fujimoto, E.P. Ippen, MIT, Cambridge, MA, USA, Volker Scheuer, G. Angelow, Theo Tschudi, Darmstadt University of Technology, Darmstadt, GERMANY
An analytic design and fabrication of double-chirped mirror pairs with reflectivities greater than 99.5% and controlled group delay dispersion over one octave of bandwidth is presented.
 
 
CMB3 9:00 - 9:30 (Invited)
Ultrafast Solid-State Lasers, Ursula Keller, Swiss Federal Institute of Technology, Zurich, SWITZERLAND
Today's ultrafast all-solid-state lasers continue to demonstrate unsurpassed performances in terms of pulse duration (ª5-fs range), pulse repetition rates (ª60 GHz) and average power (27-W for picosecond pulses and 16-W for femtosecond pulses).
 
 
CMB4 9:30 - 9:45
Mode Locked Nd:Glass Fiber Laser Using Intensity Dependent Defocusing by Low-Temperature-Grown GaAs, Martin Leitner, Peter Glas, Marc Wrage, T. Sandrock, Max-Born-Institute, Berlin, GERMANY, H. Legall, Axel Heuer, Universitaet Potsdam, Potsdam, GERMANY, G. Apostolopoulos, Jens Herfort, L. Daeweritz, Paul-Drude-Institut, Berlin, GERMANY
We report on a diode pumped fiber laser at 1.06 µm with a new mode locking device that uses the intensity dependent defocusing in low-temperature-grown GaAs. Z-scan experiments with LT-GaAs layers confirm the defocusing effect.
 
 
CMB5 9:45 - 10:00
High Power THz Radiation from an Optimized InAs Emitter in a Magnetic Field Irradiated with Femtosecond Laser Pulses, Eiji Kawahata, Institute for Molecular Science, Okazaki, JAPAN, Shingo Ono, Science University of Tokyo, Tokyo, JAPAN, Takayuki Yano, Hideyuki Ohtake, Nobuhiko Sarukura, Institute for Molecular Science, Okazaki, JAPAN, Takeyo Tsukamoto, Science University of Tokyo, Tokyo, JAPAN
We have optimized the geometry of an InAs THz-radiation emitter irradiated with femtosecond laser pulses in a magnetic field. As a result, THz radiation can be detected by a room-temperature pyroelectric thermal receiver.
 
 
CMB6 10:00 - 10:15
Laser Written Waveguides in Glasses and Crystals, Matthias Will, S. Nolte, J.-P. Ruske, F. Wunderlich, Andreas Tuennermann, Friedrich-Schiller-Universitaet - Jena, Jena, GERMANY
Ultrashort laser pulses focused inside optical transparent bulk materials create localized refractive index changes. Optical waveguides have been written and investigated with this technique.
 
 
CMB7 10:15 - 10:30
Photon Echo Spectroscopy in the Single Optical-Cycle Regime, Maxim Pshenichnikov, Andrius Baltuska, Douwe Wiersma, University of Groningen, Groningen, THE NETHERLANDS
The formalism of photon echo spectroscopy with ultrashort pulses that consist of only a few optical cycles is discussed. The pure dephasing time of electrons solvated in water is measured to be ~1.6 fs. The breakdown of the rotating wave approximation is addressed.
 
 
11:00 - 13:00
Session: High Speed Components and Systems
Presider: TBA
 
 
CMH1 11:00 - 11:30 (Invited)
40 Gbit/s OTDM-WDM Transmulti-plexers, Mario Puleo, CSELT, Torino, ITALY
Direct interconnection between very high speed OTDM trunks and WDM networks, keeping the signal in the optical domain, is an attractive feature for high capacity all-optical networks. Different approaches exploiting semiconductor devices as SOAs, MZI-IWCs, multi-section lasers have been demonstrated, achieving throughputs up to 40 Gbit/s.
 
 
CMH2 11:30 - 11:45
All-Optical 3R Regeneration and Wavelength Conversion in an Integrated SOA/DFB Laser: Experiment and Simulation, Vishal Saxena, M. Owen, M.F.C. Stephens, A. Wonfor, R.V. Penty, Ian White, University of Bristol, Clifton, Bristol, UK
Simultaneous all-optical 3R regeneration and NRZ to RZ format conversion is demostrated for the first time in a single chip integrated SOA/DFB laser. The nonlinear transfer function of the SOA/DFB achieves reshaping whilst gain switching the DFB with an extracted clock achieves retiming.
 
 
CMH3 11:45 - 12:00
Ultrafast Saturable Absorber Device with Heavy-Iron Irradiated Quantum Wells for High Bit-Rate Optical Regeneration at 1.55 µm, Juliette Mangeney, J.-L. Oudar, G. Aubin, J.C. Harmand, G. Patriarche, France Telecom-CNET, Bagneux, FRANCE, N. Stelmakh, J-M. Lourtioz, Universite Paris-Sud, Orsay , FRANCE
A saturable absorber vertical cavity device at 1.55µm wavelength is shown to operate at repetition rates of at least 10GHz, with capabilities beyond 100GHz. Power discrimination measurements on modulated signals show an amplification (up to x4) of the modulation contrast.
 
 
CMH4 12:00 - 12:15
High-Speed 1.55µm Fe-Doped Multiple Quantum Wells Saturable Absorber, A. Marceaux, S. Loualiche, H. Folliot, O. Dehaese, J. Even, B. Lambert, INSA de Rennes, Rennes FRANCE
We present a high-speed 1.55µm multiple quantum wells saturable absorber. We show that the switching speed can be enhanced by more than a factor 6 by Fe-doping without degrading the contrast ratio of the device.
 
 
CMH5 12:15 - 12:30
Optimization of Be-Doped Low-Temperature-Grown GaAs Layers for Ultrafast Optoelectronic Applications, Jean-Fransois Roux, Universite de Savoie, Le Bourgert du Lac, FRANCE, J. Siegert, Saulius Marcinkevicius, Royal Institute of Technology, Stockholm, SWEDEN, M. Kaminska, A. Wolos, Warsaw University of Technology, Warsaw, POLAND, K. Bertulis, Semiconductor Physics Institute, Vilnius, LITHUANIA, J.-L. Coutaz, Universite de Savoie, Le Bourger du Lac, FRANCE, A. Krotkus, Semiconductor Physics Institute, Vilnius, LITHUANIA
We present fabrication and characterization of Be-doped low-temperature-grown GaAs annealed layers with subpicosecond response times. These thick, high resistivity layers with good structure quality show excellent parameters for ultrafast optoelectronics
 
CMH6 12:30 - 12:45
Novel Photoconductive Detector with Buried FIB Implanted p-Doped Stripe, Markus Vitzethum, M. Ruff, Universitaet Erlangen-Nuernberg, Erlangen, GERMANY, Peter Kiesel, S. Malzer, G.H. Doehler, Universitaet Erlangen-Nuernberg, Erlangen, GERMANY, J. Koch, A.D. Wieck, Ruhr Universitaet Bochum, Bochum, GERMANY
We present a novel concept for an extremely sensitive detector with high photocoductive gain. P-doping by focused ion beam implantation and MBE overgrowth is used to fabricate an extremely low capacitance nip structure.
 
CMH7 12:45 - 13:00
Ultrafast Photoconductive Switches with Currrent Block Layers Fabricated by Using an Atomic Force Microscope, Taro Itatani, Hideki Kikkawa, Takeyoshi Sugaya, Kazuhiko Matsumoto, Tadashi Nakagawa, Kenji Yonei, Yoshinobu Sugiyama, Electrotechnical Laboratory, Ibaraki, JAPAN
We have demonstrated ultrafast response as 310 fs for photoconductive switches with current block layers. The switch was made by micro-anodization process by using an atomic force microscope.
 
ROOM 4
 
08:30 - 10:30
Session: New Gain Media
Presider: Peter Blood, Cardiff University, UK
 
 
CMC1 8:30 - 9:00 (Invited)
Performance Characteristics of CW InGaN Multiple Quantum Well Laser Diodes, Michael Kneissl, Xerox PARC, Palo Alto, CA, USA
The performance characteristics of InGaN MQW laser diodes grown on sapphire substrates is compared to lasers on laterally epitaxially overgrown GaN on sapphire. The effect of dislocation density on the electronic and optical properties is discussed.
 
 
CMC2 9:00 - 9:15
Selective Excitation of Different Modes in Non-Circular GaN Microdisk Lasers, Nathan Rex, Richard Chang, Yale University, New Haven, CT, USA, Louis Guido, Viriginia Tech, Blacksburg, VA
Various (stable and/or chaotic) types of microcavity modes provide feedback for non-circular GaN microdisks to emit stimulated emission directionally. Focused pumping at different locations on the GaN top face selects certain types of lasing modes.
 
 
CMC3 9:15 - 9:30
Optical and Material Studies of Indium Compositional Fluctuations in InGaN/GaN Quantum Well Structures, Shih-Wei Feng, National Taiwan University, Taipei, TAIWAN, R.O.C., Yen-Sheng Lin, Chung Cheng Institute of Technology, Taoyuan, TAIWAN, R.O.C., Chi-Chih Liao, National Taiwan University, Taipei, TAIWAN, R.O.C., Kung-Jeng Ma, Chung Cheng Institute of Technology, Taiwan, TAIWAN, R.O.C., C. C. Yang, National Taiwan University, Taipei, TAIWAN, R.O.C., Chang-Cheng Chou, Chia-Ming Lee, Jen-Inn Chyi, National Central University, Chung-Li, TAIWAN, R.O.C.
Optical and material features on indium aggregation and phase separation in MOCVD grown InGaN/GaN quantum well structures were studied with various tools to show their impacts on photon emission characteristics.
 
CMC4 9:30 - 10:00 (Invited)
High Power Quantum Dot Lasers, Dieter Bimberg, Technical University of Berlin, Berlin, GERMANY
Quantum dot (QD) lasers demonstrate lower threshold current densities and extended wavelength ranges for a given substrate as compared to quantum well devices. CW 3-4 W (1.3-0.9 µm) operation of GaAs-based QD lasers is realized.
 
 
CMC5 10:00 - 10:15
150 nm Tuning Range in a Grating-Coupled External Cavity Quantum Dot Laser, H. Li, Guangtian Liu, , P. Varangis,, USA, Timothy Newell, A. Stintz, B. Fuchs, K.J. Malloy, Luke Lester, University of New Mexico, Albuquerque, NM, USA
A quantum dot laser in a grating-coupled external cavity is shown to operate across a 150 nm tuning range in the near-infrared with a threshold current density that is no greater than 1.1 kA/cm2.
 
CMC6 10:15 - 10:30
Performance of AlGaAs/GaAs Quantum Wire Lasers Fabricated on Sub-µm-Pitch Gratings: In Both Distributed Feedback-and-Wire Directions, Tae Geun Kim, Chang-Sik Son, Electrotechnical Laboratory, Ibaraki, JAPAN, Mutsuo Ogura, CREST, Tsukuba, Ibaraki, JAPAN
AlGaAs/ GaAs quantum wire array (QWA) lasers are fabricated by one-step metalorgantic chemical vapor deposition (MOCVD) on sub-µm-pitch gratings. Room-temperture lasing characteristics are demostrated in both distributed feedback (DFB)- and wire-directions. Gain-couple DFB effects through QWA are also discussed.
 
 
 
11:00 - 12:30
Session: Laser Cleaning
Presider: Costas Fotakis, F.O.R.T.H.-I.E.S.L., Crete, GREECE
 
CMI1 11:00 - 11:15
Laser Removal of Particles Using Tunable Wavelength, C. Curran, Jong-Myoung Lee, Kenneth Watkins, University of Liverpool, Liverpool, UK
Wavelength dependency in the removal of small particles from semiconductor devices has been investigated using an Optical Parametric Oscillator which can be tuned to various wavelength (410-2300 nm), since wavelength is one of the most crucial parameters for successful laser cleaning.
 
CMI2 11:15 - 11:30
Laser Cleaning of Steels After High Temperature Oxidation, P. Psyllaki, P. Pasquet, Universite de Bourgogne, Dijon, FRANCE, P. Meja, IRPHE-LP3, Marseilles, FRANCE, Roland Oltra, Universite de Bourgogne, Dijon, FRANCE, M. Autric, IRPHE-LP3, Marseilles, FRANCE
The use of a nanosecond pulsed Nd:YAG laser is a powerful technique for the removal of thermal oxides of different chemical compositions, developed on steel surfaces during high temperature oxidation, due to the selective fracture of the oxide/metal interface.
 
 
 
CMI3 11:30 - 11:45
Laser Generated Cavitation Near a Curved Surface, M.J. Gaze, D.C. Emmony, Loughborough University, Loughborough, Leics., UK
Optically produced cavities were studied using high time and space resolution imaging. The bubbles were produced in water near both convex and concave surfaces which were found to strongly modify the growth and collapse phases.
 
CMI4 11:45 - 12:00
Thermomechanical Effect Induced by Pulse Laser Heating, Xianfan Xu, Purdue University, West Lafayette, IN, USA, Xinwei Wang, Purdue University, West Lafayette, IN, USA
This work investigates thermomechanical phenomena induced by nano, pico, and femtosecond laser pulses. Non-equilibrium between electron and lattice, non-Fourier thermal transport, and coupling between the thermal and stress field are considered. Results show a rapid decay of the stress generated by femtosecond laser pulses, which explains the minimal damage in ultrafast laser-material processing.
 
 
CMI5 12:00 - 12:15
Photochemical Effects in the Ultraviolet Laser Ablation of Polymers. Implication for the Laser Cleaning of Molecular Substrates, Demetrios Anglos, Institute of Electronic Structure & Laser, Crete, GREECE, Savas Georgiou, University of Ioannina, Ioannina, GREECE
A novel experimental approach is employed for the systematic assessment of the nature and extent of photochemical modifications induced on molecular substrates upon ultraviolet laser ablation. The implications of the results for the mechanisms of the ultraviolet ablation with different laser pulse widths are discussed. Additionally, the optimization of procedures for the implementations of UV laser ablation is discussed with specific examples drawn from the excimer-laser based restoration of painted artworks.
 
CMI6 12:15 - 12:30
Paint Removal with a High Repetition Rate TEA CO2 Laser, D.E. Roberts, National Laser Centre, Pretoria, SOUTH AFRICA
We are investigating the efficiency of paint removal with high average power (Pav>1 KW) TEA CO2 lasers. We find that high repetition rates (f> 1KHz) can lead to significant improvements in paint and primer removal efficiency.
 
 
12:30 - 13:30
Session: Long Wavelength Diode Lasers
Presider: John Marsh, University of Glasgow, Scotland, UK
CML1 12:30 - 12:45
Low Threshold GaAsSb/GaAs Broad Area Laser Diodes Emitting at 1220 nm, Juergen Joos, Irene Ecker, Karl Ebeling, University of Ulm, Ulm, GERMANY
GaAs-based laser diodes containing a GaAsSb quantum well active layer are presented. The devices were grown by gas source molecular beam epitaxy. They exhibit a room-temperature threshold current density of 375 Acm^-2 at an emission wavelength of 1221 nm.
 
CML2 12:45 - 13:00
High Temperature GaInAsSb/GaAlAsSb Quantum Well Continuous Wave Lasers, D.A. Yarekha, G. Glastre, A Perona, Y. Rouillard, A.N. Baranov, G. Boissier, Aurore Vicet, C. Alibert, Universite Montpellier II, Montpellier , FRANCE
Narrow ridge 5-µm wide single mode GaInSbAs/ GaAlSbAs strained quantum well lasers have been fabricated. The lasers are able to operate in continuous wave regime at temperatures up to 130°C and up to 180°C in pulsed regime.
 
 
CML3 13:00 - 13:15
Optical Gain and Loss in 2.3-2.5µm InGaAsSb/AlGaAsSb QW Broad-Area and Ridge-Waveguide Lasers, D.Z. Garbuzov, Sarnoff Corporation, Princeton, NJ, USA, Gregory Belenky, D.V. Donetsky, SUNY - Stony Brook, Stony Brook, NY, USA, Ray Martinelli, H. Lee, John Connolly, Sarnoff Corporation, Princeton, NJ, USA
Current and temperature dependencies of the modal gain and static characteristics in 2.3-2.5µm InGaAsSb/ AlGaAsSb/GaSb broad-area and ridge-waveguide lasers were measured. We observed switching of the lasing energy with current and temperature.
 
 
CML4 13:15 - 13:30
4 - 6 µm Vertical Cavity Surface Emitting Laser Based on Lead Salt Compounds, Thomas Schwarzl, G. Springholz, Johannes Kepler University Linz, Linz, AUSTRIA, M. Aigle, H. Pascher, Universitaet Bayreuth, Bayreuth, GERMANY, W. Heiss, Johannes Kepler University Linz, Linz, AUSTRIA
Mid infrared vertical laser emission from PbTe quantum wells in IV-VI microcavity structures is demonstrated. The vertical cavity laser structures were grown by molecular-beam epitaxy. We observed optically pumped stimulated emission at 4.8 and 6.1 µm.
 
ROOM 5
 
08:30 - 10:30
Session: C.W. Optical Parametric Oscillators
Presider: Marc de Micheli, Universite de Nice, FRANCE
 
 
CMD1 8:30 - 9:00 (Invited)
Diode-pumped Optical Parametric Oscillators, Klaus-Jochen Boller, M.E. Klein, D.H. Lee, P. Grosse, H. Ridderbusch, M.A. Tremont, A. Robertson, J.-P. Meyn, Richard Wallenstein, Universitaet Kaiserslautern, Kaiserslautern, GERMANY
We report on OPOs directly pumped with diode lasers, for compact all-optical phase-coherent frequency-division, for the generation of continuously tunable idler radiation, and for all-electronic, high-speed, wide-range wavelength access with ultra-high repetition rate synchronously pumped OPOs.
 
CMD2 9:00 - 9:15
A Singly Resonant CW OPO Using Periodically Poled KTiPO4, D. Weise, Ulrich Stroessner, A. Peters, J. Mlynek, S. Schiller, Universitaet Konstanz, Konstanz, GERMANY, Ady Arie, Gil Rosenmann, Tel Aviv University, Tel Aviv, ISRAEL
We report on a cw singly-resonant OPO based on periodically poled KTiPO4. It shows an emission range from 865 to 1384 nm, output powers up to 70 mW, narrow linewidth and frequency-stable modehop-free output.
 
 
CMD3 9:15 - 9:30
Continuous-Wave Optical Parametric Oscillators Pumped by External-Cavity Single-Mode Diode Lasers, Ian Lindsay, C. Petridis, Malcolm Dunn, Majid Ebrahimzadeh, University of St. Andrews, University of St. Andrews, St. Andrews, Fife, Scotland, UK
Single-mode diode laser pumping of a pump enhanced singly resonant OPO having a 30mW threshold and idler tuning over 2.65-3.4µm is described. Operation of a doubly resonant OPO pumped by a grating stablised single mode laser is also discussed.
 
CMD4 9:30 - 10:00 (Invited)
Mid-Infrared Continuous-Wave Singly Resonant Optical Parametric Oscillator with Periodically Poled Ti:LiNbO3 Waveguide, Dirk Hofmann, G. Schreiber, W. Grundkoetter, R. Ricken, Wolfgang Sohler, Universitaet Paderborn, Paderborn, GERMANY
The oscillator has an excellent performance: threshold at 480 mW external pump power, tuning range of signal and idler detween 2880 nm and 3360 nm, overall slope efficiency of about 30% , maximum output power of 310mW at 1.5 W pump power.
 
CMD5 10:00 - 10:15
Single Frequency Intracavity Single Resonance Oscillator, Haim Abitan, Technical University of Denmark, Lyngby, DENMARK, Preben Buchhave, Technical University of Denmark, Lyngby, DENMARK
Optical parametric oscillator based on periodically poled LiNbO3 is put in intracavity configuration with a single frequency, unidirectional ring, continuous wave, Nd:YVO4 laser. The power and frequency characteristics of the coupled cavities are described experimentally and theoretically.
 
 
CMD6 10:15 - 10:30
Methods for Extending Mode-Hop-Free Tuning Using a Dual-Cavity, Pump-Enhanced Optical Parametric Oscillator, David McGloin, G.A. Turnbull, Ian Lindsay, Majid Ebrahimzadeh, Malcolm Dunn, University of St. Andrews, St. Andrews, Fife, Scotland, UK
We report extended mode-hop-free tuning in a continuous-wave, pump-enhanced optical parametric oscillator. A dual-cavity configuration allows independent control of the resonant pump and signal fields resulting in smooth tuning of the idler through a range of >10GHz.
 
 
 
11:00 - 13:30
Session: Inorganic Thin Films and Fibres
Presider: James Wilkenson, University of Southampton, Hampshire, UK
 
 
CMJ1 11:00 - 11:30 (Invited)
Crystalline Waveguides in Fluorides and Oxides; Fabrication and Characterization, Juerg Hulliger, R. Burkhalter, I. Dohnke, University of Bern, Bern, SWITZERLAND
We review recent progress in the fabrication of dielectric waveguided gain media. Particularly, fabrication and characterization of crystalline waveguides of fluorides and oxides (lanthanides, transition metals) producing stimulated emission from ultraviolet to infrared are considered.
 
 
CMJ2 11:30 - 11:45
Fabrication and Properties of Chalcogenide Glasses for Planar Waveguides, Kathleen Richardson, C. Lopez, A. Graham, A. Schulte, C. Rivera, S. Seal, D.K. Verma, University of Central Florida, Orlando, FL, USA, K. Turcotte, A. Saliminia, Tigran Galstyan, A. Villeneuve, Universite Laval, Quebec City, QC, CANADA
The processing and characterization of bulk and film As-S-Se chalcogenide glasses for use as 1.3 and 1.55µm planar waveguide materials is discussed. Photo-induced chemical and structural changes to glass properties are discussed.
 
 
CMJ3 11:45 - 12:00
Vapor-Phase Proton Exchange for High Quality LiTaO3 Waveguides, Roberta Ramponi, R. Osellame, M. Marangoni, V. Russo, Politecnico di Milano, Milano, ITALY
High quality nonlinear waveguides on lithium tantalate have been realized by means of vapor phase proton exchange. The experimental set-up, optical characterization and losses are discussed, evidencing the advantages with respect to common fabrication techniques.
 
 
CMJ4 12:00 - 12:15
High Photoluminescence Performance in Er:Al2O3 Thin Films with Large Rare - Earth Concentrations, M. Jimenez De Castro, J.A. Chaos, Instituto de Optica, Madrid, SPAIN, M. Fernandez, Universita di Lecce, Lecce, ITALY, R. Serna, Carmen Afonso, Instituto de Optica, Madrid, SPAIN
The control of the Er concentration and distribution in Al2O3 films is achieved by pulsed laser deposition. The special features of this technique allows to obtain an excellent photoluminescence performance for concentrations around 1020 Er cm-3.
 
 
CMJ5 12:15 - 12:30
Pr3+-Doped Fluoride Glass for a 589 nm Fibre Laser, Mira Naftaly, Caroline Batchelor, Animesh Jha, University of Leeds, Leeds, UK
A high temperature fluoride glass was designed for a praseodymium-doped fibre laser at 589 nm. Enhanced emmission was obtained by thermally populating an upper excited level,indicating that lasing at 589nm is possible at elevated temperatures.
 
 
CMJ6 12:30 - 12:45
High Resolution Concentration Profile of Praseodymium Within the Core of a ZBLANP Fibre, P. Farrell, I. Mitchell, G. Baxter, Victoria University, Melbourne, Victoria, AUSTRALIA
A uniquely modified confocal microscopy technique has determined that the concentration of the praseodymium ion with in the core of a ZBPLANP host fibre has a broadened gaussian profile contrasting with the expected top-hat function.
 
CMJ7 12:45 - 13:00
Permanent Birefringence Patterns Engraved in Fused Silica with Infrared Femtosecond Laser Pulses, Andre Mysyrowicz, L. Sudrie, M. Franco, B. Prade, Ecole Polytechnique - ENSTA, Palaiseau, FRANCE Using infrared femtosecond laser pulses, we inscribe permanent birefringent structures of controllable microscopic dimensions in fused silica platelets. Polarization sensitive diffraction gratings working in transmission are demonstrated.
 
CMJ8 13:00 - 13:15
Diamond Optics for High Power CO2 Lasers, H.P. Godfried, P. Kriele, C.E. Hall, Drukker International BV, Cuijk, THE NETHERLANDS, C.S.J. Pickles, S.E. Coe, R.S. Sussmann, De Beers Industrial Diamonds Ltd., Ascot, Berkshire, UK
Progress in synthesizing and processing large substrates of consistent quality enable the use of diamond in multi-kilo Watt CO2 lasers. Laser-induced damage thresholds were measured. Performance measurement and stimulations of diamond optics are reported.
 
 
CMJ9 13:15 - 13:30
Integration of Terraced Laser Diode and Optical Isolator by Wafer Direct Bonding, Hideki Yokoi, Tetsuya Mizumoto, Tokyo Institute of Technology, Meguro-ku, Tokyo, JAPAN
Fabrication process of a terraced laser diode integrated with an optical isolator has been studied. A reactive ion etching of compound semiconductors and wafer direct bonding between the semiconductors and magnetic garnets are demonstrated.
 
ROOM 6
 
08:30 - 10:30
Session: Photonic Bandgap Structures
Presider: Tim Birks, University of Bath, UK
 
CME1 8:30 - 9:00 (Invited)
Very First Evidence of Propagation in a Modified Chemical Vapour Deposition Photonic-Band-Gap Fibre (Bragg Type), Fabien Brechet, J.L. Auguste, J. Marcou, P. Roy, D. Dagnoux, J.M. Blondy, IRCOM, Limoges, FRANCE, G. Monnom, Bernard Dussardier, Universite de Nice, Nice , FRANCE
Designed to shift down the zero dispersion wavelength, a photonic band gap fibre with a depressed core index has been manufactured and tested. Experimental single mode propagation at 1.06µm by Bragg effect is clearly observed.
 
 
CME2 9:00 - 9:15
Embedding of III-V Compound Semiconductors into 3D Photonic Crystals, Osamu Hanaizumi, Yasuki Sakurai, Yoshizo Aizawa, Tohoku University, Aoba-ku, Sendai, JAPAN, Shojiro Kawakami, Tohoku University, Aoba-Ku, Sendai-Shi, JAPAN, Eiichi Kuramochi, NTT Basic Research Labs, Atsugi, Kanagawa, JAPAN, Satoshi Oku, NTT Photonics Labs, Kanagawa, JAPAN
InGaAs/InGaAlAs multiple quantum wells are grown selectively in the region surrounded by Si/SiO2 three-dimensional photonic crystal on InP substrates. Polarization dependence is observed in the photoluminescene transmitted in the lateral direction in the photonic crystal.
 
 
CME3 9:15 - 9:30
Fabrication of Photonic Crystal Structure in Fluorine-Doped Silicon Dioxide Film by Dry and Wet Etching Processes, Kenji Kintaka, Junji Nishii, Osaka National Research Institute, Ikeda, Osaka, JAPAN
We fabricate a photonic crystal structure in fluorine-doped silicon dioxide film. Fluorine-doped and undoped silicon dioxide films were formed by plasma enhanced chemical vapor deposition and were etched with carbon tetrafluoride and hydrofluoric solution.
 
 
CME4 9:30 - 9:45
Mode-Coupling in Photonic Crystal Fibers with Multiple Cores, Martin Kristensen, Technical University of Denmark, Lyngby, DENMARK, John Canning, Tom Ryan, University of Sydney, Eveleigh, Sydney, NSW, AUSTRALIA
Low loss photonic crystal fibers with multiple cores were fabricated using stacked glass tubes. Bend induced coupling between fundamental core modes decreases as a function of wavelength indicating a 'bridge effect' between the core regions.
 
 
CME5 9:45 - 10:00
A Novel Approach to the Formation of Photonic Structures in Glasses, Andrey Lipovskii, St. Petersburg Technical University, St. Petersburg, RUSSIA, V.G. Melehin, A.F. Ioffe Physicotechnical Institute, St. Petersburg, RUSSIA, V.D. Petrikov, St. Petersburg Technical University, St. Petersburg, RUSSIA, D.K. Tagantsev, B.V. Tatarintsev, S.I. Vavilov State Optical Institute, St. Petersburg, RUSSIA
Uniform size-distributed high-refractive microspheres in a vitreous matrix were formed thorugh a liquid-liquid phase separation of glass. The structures are studied by optical diffraction, microscopy and transmission measurements as well as with Raman and X-ray.
 
 
CME6 10:00 - 10:15
Transmission and Reflection Coefficients of Periodic Metallic Nanospheres Structures in the Visible, S.M. Kachan, A.N. Ponyavina, National Academy of Sciences of Belarus, Minsk, BELARUS
On the base of the theory of multiple scaterring of waves the dependence of spectral characteristics of metallic nanoparticales momolayers near the surface plasmon frequency on their space ordering is investigated. Formation of the photonic stop band accompanied by a plasmon absorption peak shift for a periodic structure of the close-packed monolayers separated by dielectric films has been established.
 
 
CME7 10:15 - 10:30
Spectral Broadening of Femtosecond Pulses in Holey Fibers, A.B. Fedotov, A.M. Zheltikov, Moscow State University, Moscow, RUSSIA, Leonid Melnikov, Saratov State University, Saratov, RUSSIA, A.P. Tarasevitch, Dietrich von der Linde, Universitaet Essen, Essen, GERMANY
Efficient spectral broadening of 150-fs pulses of a Ti:sapphire laser in optical fibers with photonic band-gap cladding (holey fibers) is experimentally demonstrated.
 
 
 
11:00 - 12:00
Session: Device Physics and Novel Structures
Presider: Karl Ebeling, University of Ulm, GERMANY
 
CMK1 11:00 - 11:15
Microscopic Physics-based Interactive Semiconductor Laser Simulator, Jerome Moloney, M. Kolesik, M. Matus, J. Hader, University of Arizona, Tucson, AZ, USA, Stephan Koch, Philipps University, Marburg, GERMANY
A full scale simulator of a semiconductor laser built on a microscopic many-body physics foundation is used to study a variety of novel nonlinear dynamical phenomena.
 
CMK2 11:15 - 11:30
Thermodynamic Relation Between Optical Gain and Spontaneous Emission in GaInP Quantum Well Lasers, John Thomson, Huw Summers, D.R. Matthews, P.M. Smowton, Peter Blood, Cardiff University, Cardiff, Wales, UK
With independent measurements of optical gain and spontaneous emission spectra in GaInP quantum well lasers we have studied the thermodynamic relation between these quantities over a range of temperatures.
 
CMK3 11:30 - 11:45
Photon Transistor Incorporating an Amplitude-Squeezed Transverse Junction Stripe Laser, Paul Edwards, W.N. Cheung, A. Uddin, G. Ganeshkumar, University of Canberra, Canberra, ACT, AUSTRALIA, K. Tanaka, T. Morita, Hirohumi Kan, Hamamatsu Photonics K.K., Hamamatsu, Shizuoka, JAPAN, Y. Yamamoto, Stanford University, Stanford, CA
We demonstrate for the first time the photonic analogue of a bipolar junction transistor in which photon emission noise is suppressed below the full shot noise level as in an electronic transistor.
 
CMK4 11:45 - 12:00
Wavelength-Graded Surface-Emitting Laser Array With Contradirectional Surface-Mode Coupling, Peer Oliver Kellermann, Norman Finger, E. Gornik, Technische Universitaet Wien, Wien, AUSTRIA, M. Ost, Ferdinand Scholz, H. Schweizer, Universitaet Stuttgart, Stuttgart, GERMANY
Multiple wavelength single-mode surface emmission has been achieved from a visible red GaInP/AlGaInP laser array. Wavelength control (with span of 5.4 nm) is achieved by post growth adjustment of the thickness of the surface waveguide.
 
 
 
12:30 - 14:00
Session: Recent Advances in Stimulated Brillouin Scattering and Wave Mixing
Presider: A.M. Schott, Defense Research Agency, Worcester, UK
 
 
CMM1 12:30 - 13:00 (Invited)
Low Threshold SBS Phase Conjugation for Quasi-CW Laser Systems, Axel Heuer,, Ralph Menzel, Universitaet Potsdam, Potsdam, GERMANY
New concepts for low power threshold SBS-mirrors were presented. We examined different kind of media in a tapered waveguide geometry. Thresholds as low as 25W have been observed in a capillary filled with CS2.
 
 
CMM2 13:00 - 13:15
The Build Up of Stimulated Brillouin Scattering Excited by Pulsed Pump Radiation in Long Optical Fibre, Valeri Kovalev, Robert Harrison, Heriot-Watt University, Edinburgh, Scotland, UK, A.M. Scott, Defense Research Agency, Malvern, Worcs., UK
We show the length of pump penetration into an optical fibre to generate Stokes return of treshold amplitude determines build-up time of SBS under long-pulse excitation. Cavity feedback expands the effective length of interaction extending the build-up time.
 
 
CMM3 13:15 - 13:30
Tunable Phase Conjugation by Degenerate Four-Wave Mixing in a Injection-Seeded Soled Dye Laser Cavity, Hirofumi Watanabe, Takashige Omatsu, Mitsuhiro Tateda, Chiba University, Chiba, JAPAN
We demonstrated efficient phase conjugator, which the tuning range from 558 nm to 564 nm by intracavity degenerate four-wave mixing in a injection-seeded solid dye laser. Maximum phase conjugate energy-extraction of 14,000% was obtained.
 
 
CMM4 13:30 - 13:45
Diffraction Properties of Intracavity Bragg Gratings, L. Menez, I. Zaquine, Ecole Nationale Superieure des Telcom, Paris, FRANCE, A. Maruani, R. Frey, Ecole Nationale Superieure des Telcom, Paris , FRANCE
Bragg diffraction of an index grating in a Fabry-Perot resonator is studied analytically. The diffraction properties are greatly enhanced by the resonator. Low index modulations or small thickness materials can hence become useful.
 
 
CMM5 13:45 - 14:00
Real-Time Holograms Generated by Second-Harmonic Cross-Correlation of Object and Reference Optical Wave-Fields, Alessandra Andreoni, Maria Bondani, Universita dell'Insubria, Como, ITALY, Yury Denisyuk, A.F. Ioffe Physicotechnical Institute, St Petersburg, RUSSIA, Marco A. C. Potenza, Universita dell'Insubria, Como, ITALY
Second-harmonic cross-correlation of an object-illuminating field with that diffused by the object is a holographic process. The field generated in a thin non-linear crystal reconstructs a virtual holographic image whose geometrical properties are calculated. Experiments on critical objects illuminated by a Q-switched Nd:YAG laser show full agreement.
 
ROOM 7
 
08:30 - 10:30
Session: Laser Radar and Imaging
Presider: Reinhard Ebert, Forschungsinstitut fur Optik der FGAN, GERMANY
 
CMF1 8:30 - 9:00 (Invited)
Lasers for Robot Control: Navigation, Telecommands and Sensor Needs for the Future, Åke Wernersson, Luleå University of Technology, Luleå, SWEDEN
Laser based navigation using directions to reflective tapes is a mature technology with >1500 industrial installations. Current efforts uses t-o-f lasers and telecommands for control of remote robots. Active "information seeking and "self monitoring" sensor-robot combinations are outlined.
 
 
CMF2 9:00 - 9:15
3-D Imaging Laser Radars: Modelling and Experimental Results, Ove Steinvall, Division of Laser Systems (FOA 32), Linköeping, SWEDEN
Model generated signals from 3-D sensing laser radars will be analysed with respect to range accuracy and range resolution. Comparison with real laser radar data will also be given from different type of systems.
 
 
CMF3 9:15 - 9:30
1.55µm Multifunction Laser Radar Using Fibre Optic Components, Fredrik Olsson, Christer Karlsson, Defense Research Establishment (FOA), Linkoeping, SWEDEN
A multifunction laser radar system based on fibre-optic components has been developed. The system operates in continuous wave and frequency modulated contiuous wave modes and can measiure range, speed, wind and vibration.
 
 
CMF4 9:30 - 9:45
Imaging Laser Radar Performance Assessment Against Various Naturally Occurring and Manmade Terrestrial Objects, Robert Grasso, James Ackleson, Northrop Grumman Corp, Rolling Meadows, IL, USA, Clinton Stimson, Christopher Vann, John Buckle, Adam C.P. Pratty, Defense Evaluation & Research Agency, Farnborough, UK, John Haigh, William Pommeroy, Sean Price, Matt Roberts, Defense Evaluation & Research Agency, Malvern, UK
Defense Northrop Grumman (US) and Defence Evaluation and Research Agency (UK) report upon a program to characterize performance of an imaging laser radar sensor trailed against various terestrial targets. Experiments and analysis were performed to quantify the sensor's performance during various operating conditions.
 
 
CMF5 9:45 - 10:00
High Resolution Self-Mixing Laser-Doppler Vibrometry with a Laser-Diode-Pumped Microchip Solid-State Laser, Kenju Otsuka, Ryoji Kawai, Takeki Fukazawa, Tokai University, Kanagawa, JAPAN
A simple self-mixing laser-Doppler vibrometer system has been built around a laser-diode-pumped microchip LiNdP4O12 laser, which provides a 50dB carrier-to-noise ratios with a measurable vibration of nm, without using any photon-correlation technique.
 
 
CMF6 10:00 - 10:15
Laser Optical Feedback Imaging A New Way for Lasers to See the World, Richard Day, Eric Lacot, Frédéric Stoeckel, Universite Joseph Fourier, Saint Martin d'Heres, FRANCE
We show that a laser with weak optical feedback is similar to an interferometer with only one external beam. Applications in various domains such as reflectometry, vibrometry, tomography and 3D imaging are presented.
 
 
CMF7 10:15 - 10:30
Real-Time, Micrometer Depth-Resolved Imaging by Low-Coherence Heterodyne Interferometry, Masahiro Akiba, Kin Pui Chan, Naohiro Tanno, Yamagata Technopolis Foundation, Yamagata, JAPAN
A two-dimensional heterodyne detection technique is demonstrated for real-time en-face imaging by optical low-coherence interferometry. The present technique, which is based on synchronous detection scheme, enables heterodyne detection with a charge-coupled device camera.
 
 
11:00 - 12:00
Session: Photonic Band Gaps
Presider: Gunnar Bjotk, Royal Institute of Technology, SWEDEN
 
 
QMC1 11:00 - 11:15
Femtosecond-Harmonic and Sum-Frequency Generation in One-Dimension Photonic Band Gap Materials, A. Balakin, V. Bushuev, B.I. Mantsyzov, I.A. Ozheredov, A.P. Shkurinov, M.V. Lomonosov Moscow State University, Moscow, RUSSIA, Pascal Masselin, G. Mouret, Universite du Littoral, Dunkerque, FRANCE
We present the results of the experiments on phase mismatched enhancement of second harmonic and sum frequency generation in one-dimension photonic bandgap structures.
 
QMC2 11:15 - 11:30
High Speed and High Efficient All Optical Switch Using Exciton-Polaritons in GaAs Thin Films, Nobuyuki Tomita, Koichi Akiyama, Tetsuya Nishimura, Yoshinori Nomura, Toshiro Isu, Mitsubishi Electric Corporation, Amagaski, Hyogo, JAPAN
We report on nonlinear optical responses of a GaAs thin film with a particular thickness comparable to the light wavelength. High speed and high efficient optical switching was demostrated using nonlinear effects of the exciton-polaritons.
 
 
QMC3 11:30 - 11:45
Gap Solitons in a Purely Nonlinear Photonic Band Gap: Novel Forms of Energy Localization, C. Conti, S. Trillo, Gaetano Assanto, Terza University of Rome, Rome, ITALY
A novel class of gap solitons in theoretically predicated in one-dimensional photonic bandgap due to backward second harmonic generation in the presence of a Kerr response. Potential applications are envisaged.
 
 
QMC4 11:45 - 12:00
Third Harmonic Generation Microscopy of GaN, Chi-Kuang Sun, Shi-Wei Chu, National Taiwan University, Taipei, TAIWAN, R.O.C., Stacia Keller, Steven DenBaars, UCSB, Santa Barbara, CA, USA
Large third harmonic generation was observed in bulk GaN by using an infrared femtosecond Cr:forsterite laser. Taking advantage of this pronounced nonlinear optical effect, we have demonstrated third harmonic generation microscopy in GaN, which reveals interesting information not obtained before.
 
 
12:30 - 14:00
Session: State Manipulation
Presider: Ennio Arimondo, University di Pisa, ITALY
 
 
QMF1 12:30 - 13:00 (Invited)
Picotesla Magnetometer Based on Coherently Prepared Thermal Alkali Atomic Vapors, Christoph Affolderback, W. Kemp, S. Knappe, M. Staehler, R. Wynands, Bonn University, Bonn, GERMANY
We present experimental investigations concerning the applications of Zeeman-split coherent population trapping (CPT) resonance in thermal alkali-metal vapors to precision magnetometry with picotesla sensitivity.
 
 
QMF2 13:00 - 13:15
Radio Frequency Field Manipulation of Electromagnetically Induced Transparency, David McGloin, G.A. Turnbull, Malcolm Dunn, University of St. Andrews, St. Andrews, Fife, Scotland, UK
We report on the manipulation of EIT resonances in atomic rubidium using radio frequency fields coupled into hyperfine levels in the upper excited state. We explore the role of three photon processes in this effect.
 
 
QMF3 13:15 - 13:30
Laser Manipulation of Mossbauer Transitions as a Novel Method of Gamma-Ray Spectroscopy, Olga Kocharovskaya, Roman Kolesov, Yuri Rostovtsev, Alex Belyanin, Texas A&M University, College Station, TX, USA
Novel spectrocopic technique based on modification of Mossbauer spectra under the action of laser radiation is proposed. The possibility of its experimental realization and a vast range of its potentail applications from fundamental to very practical are discussed.
 
QMF4 13:30 - 13:45
Tailoring of Vibrational State Populations with Light-induced Potentials in Molecules, M. Rodriguez, K.-A. Suominen, Helsinki Institute of Physics, Helsingin yliopisto, FINLAND, B. Garraway, University of Sussex at Brighton, Brighton, UK
We propose a method for achieving highly efficient transfer between the vibrational states in a diatomic molecule by using strong laser pulses and light induced potentials.
 
 
QMF5 13:45 - 14:00
Spin Squeezing in Atomic Systems, Laurent Vernac, M. Pinard, Elisabeth Giacobino, Universite P. et M. Curie, Paris , FRANCE
We show that atomic spin squeezing can be obtained when atoms interact with light in an optical cavity. Occurrence of spin squeezing was explored either with incident coherent light or with incident squeezed light.
 
ROOM 8
 
08:30 - 10:30
Session: Transverse Patterns
Presider: Paul Mandel, Universite Libre de Bruxelles, BELGIUM
 
 
QMA1 8:30 - 9:00 (Invited)
Stabilization of Simple Periodic, Quasiperiodic and Complex Periodic Patterns via Higher Harmonics, Edgar Grosse Westhoff, Thorsten Ackemann, A. Aumann, R. Herrero, W. Lange, Westfaelische Wilhems-Universitaet Muenster, Muenster, GERMANY
We investigate the impact of higher spatial harmonics on the pattern selection process for a variety of structures experimentally. The results are interpreted in terms of amplitude equations.
 
 
QMA2 9:00 - 9:15
Domains and Cavity Solitons, in Lasers with AC-Injection, German de Valcárcel, Universitat de Valencia, Burjassot, SPAIN, Kestutis Staliunas, Physikalisch-Technische Bundesanstalt, Braunschweig, GERMANY
Lasers, as erll as other phase unlocked nonlinear optical systems, when driven by an ac-injection, may display domains, localized states and patterns typical of phase-locked systems.
 
 
QMA3 9:15 - 9:30
Frequency Selection by Soliton Excitation in Nondegenerate Intracavity Downconversion, Dmitry Skryabin, University of Strathclyde, Glasgow, Scotland, UK, A. R. Champneys, University of Bristol, Bristol, England, UK, William Firth, Strathclyde University, Glasgow, Scotland, UK
We show that soliton excitation in intracavity downconversion naturally selects a strictly defined frequency difference between the signal and idler fields. The frequency selection is shown to be closely linked with the relative energy balance between the idler and signal fields. Effects of spatial and temporal walk-off on solitons excitions are also disussed.
 
 
QMA4 9:30 - 9:45
Web Pattern Formation in a Spatially Distributed Nonlinear Optical System, S. Lachinova, Weiping Lu, Heriot-Watt University, Edinburgh, UK, M. Vorontsov, Army Research Lab, Adelphi, MD, USA
We study a new web-type spatial structure in a spatially distributed nonlinear optical system. This pattern formation is shown to emerge from clusters of localized states through a sequence of spatial bifurcations.
 
 
QMA5 9:45 - 10:00
Optical Sprinklers, Andrew Scroggie, Gian-Luca Oppo, William Firth, Strathclyde University, Glasgow, Scotland, UK
We study the rotation of regularly and irregularly spaced radial lines of zero intensity in parametric oscillators. Utilisation of these optical sprinklers for the trapping and distribution of atoms and other small particles is discussed.
 
 
QMA6 10:00 - 10:30 (Invited)
Cavity Solitons, William Firth, Strathclyde University, Glasgow, Scotland, UK
Cavity solitons are stable localised nonlinear excitations of driven optical cavities. This invited paper discusses the theory and experimental demonstration of cavity solitons and related phenomena. Properties of interest for information processing are identified.
 
 
11:00 - 12:30
Session: Novel Developments in Coherent Light Sources
Presider: Malcolm Dunn, University of St. Andrews, Scotland, UK
 
 
QMD1 11:00 - 11:15
Higher-Order Fractal Laser Modes, G. S. McDonald, University of Salford, Salford, UK, G. H. C. New, Imperial College, London, UK, G. P. Karman, J. P. Woerdman, University of Leiden, Leiden, THE NETHERLANDS
We present theoretical calculations of higher-order fractal modes of the kaleidoscope laser. The virtual source method has been generalised to two transverse dimensions. Direct modelling of experimental mode-selection techniques has also been studied.
 
 
QMD2 11:15 - 11:30
High Harmonic Generation of X-Rays by Carbon Nanotubes, Ofir Alon, Vitali Averbukh, Nimrod Moiseyev, Israel Institute of Technology, Haifa, ISRAEL
We extend the method for the formulation of selection rules for high harmonic generation spectra beyond the dipole approximation and apply it to carbon nanotubes interacting with a circularly polarized laser field. We show that the carbon nanotubes can be excellent systems for a selective generation of high harmonics, up to the X-ray regime.
 
 
QMD3 11:30 - 11:45
Resolution of Gamma-Ray Laser Dilemma, Olga Kocharovskaya, Roman Kolesov, Yuri Rostovtsev, Texas A&M University, College Station, TX, USA
Supression of resonant absorption via laser driving of bounded eletronic transition in active ions suggests a principle resolution of gamma-ray laser dilemma and opens a new path for realization of gamma-ray laser.
 
 
QMD4 11:45 - 12:00
Debris-Free, Droplet Laser Plasma Sources in the EUV and Soft X-Ray Ranges, Guido Schriever, Christian Keyser, Martin Richardson, University of Central Florida, Orlando, FL, USA, Edmund Tureu, J-MAR Technology Inc, San Diego, CA, USA
The droplet laser plasma has many advantages as a pulsed point source of short wavelength radiation. We report new measurements for extended lifetimes in the EUV, and describe a novel development for the generation of x-ray radiation.
 
 
QMD5 12:00 - 12:15
Laser Operation with Two Controlled Transverse Modes, Ram Oron, S. Blit, Nir Davidson, A.A. Friesem, Weizmann Institute of Science, Rehovot, ISRAEL, E. Hasman, Israel Institute of Technology, Haifa, ISRAEL
A novel resonator configuration, which enables laser operation with two different transverse modes simultaneously, is presented. The two modes utilize the gain medium more efficiently, so as to obtain a relatively high output power and beam quality. Basic principles and experimental results with Nd:YAG lasers are presented.
 
 
QMD6 12:15 - 12:30
Ultrashort Laser-Solid Interaction: Ionisation, Absorption, and Ablation, E.G. Gamaly, Andrei Rode, Australian National University, Canberra, ACT, AUSTRALIA
For the first time a comprehensive, self-consistent analytical model for ultra-short-pulse laser-ablation of solids has been developed. Based on ion extraction by a charge separation field, it gives ablation thresholds for metals and dielectrics as well as the required laser-contrast-ratio.
 
 
12:30 - 13:30
Session: Microcavities
Presider: Kenju Otsuka, Tokai University, JAPAN
 
 
QMG1 12:30 - 12:45
Giant Nonlinear Emission in Semiconductor Microcavities, G. Messin, Elisabeth Giacobino, J. Ph. Karr, Universite P. et M. Curie, Paris, FRANCE
We present new experiments showing nonlinear emission in a semiconductor microcavity under weak continous-wave laser excitation. The results can be interpreted as due to amplification by polariton-polariton scattering.
 
 
QMG2 12:45 - 13:00
First Principle Theory for Cavity Solitons in Semiconductor Microresonators, Massimo Brambilla, Tommaso Maggipinto, Francesco Rizzi, Universita Politecnico di Bari, Bari, ITALY, Lorenzo Spinelli, Luigi Lugiato, Giovanna Tissoni, Universita dell'Insubria, Como, ITALY
We present a microscopic model describing the nonlinear response of broad-area semiconductor microresonators, taking into account the most relevant many-body effects, and utilize powerful techniques to investigate the stability and the dynamical properties of Cavity Solitons.
 
 
QMG3 13:00 - 13:15
Nonlinear Optics of Exciton-Polaritons in Semiconductor Microcavities, C Ciuti, P Schwendimann, B. Deveaud, A Quattropanu, EPFL, Lausanne, SWITZERLAND
The giant nonlinearities of microcavity polaritons are demostrated both for resonant and non-resonant excitation in excellent agreement with recent experiments. Analytical and numerical results clearly explain the physics of the interacting polariton matter.
 
 
QMG4 13:15 - 13:30
Fast Transmission Changes Induced by a Quadratic Nonlinear Interaction within a Microcavity, Crina Cojocaru, Jordi Martorell, Ramon Vilaseca, Universidad Politecnica de Catalunya, Terrassa, SPAIN, Francesc Diaz, Universität Rovira i Virgili, Tarragona, SPAIN
We experimentally measured 20% change in the transmission of a nonlinear microcavity. The time response of this change induced by a cascaded nonlinear interaction is shown to be limited only by the pulse duration.
 
ROOM 9
 
08:30 - 10:30
Session: Symposium on Quantum Entanglement I
Presider: Alexander Sergienko, Boston University, MA, USA
 
 
QMB1 8:30 - 9:00 (Invited)
Universal Optimum Quantum Cloning and Macroscopic Quantum State Superposition By Optical Parametric Amplification, Francesco De Martini, Universita di Roma "La Sapienza, Roma, ITALY
We report the first realization of a Universal Optimum Quantum Cloning Machine and of an "all optical" Schroedinger-Cat apparatus based on entangled Optical Parametric Amplification.
 
 
QMB2 9:00 - 9:15
Deterministic Entanglement Between Three Quantum Systems in Cavity Quantum Electrodynamics, Arno Rauschenbeutel, G. Nogues, S. Osnaghi, B. Bertet, M. Brune, J.-M. Raimond, S. Haroche, Ecole Normale Superieure, Paris, FRANCE
We have generated an entagled states between two atom and a zero or one photon field stored in a resonator. To test the state coherence, we detected three particle correlations in two different basis states.
 
 
QMB3 9:15 - 9:30
High - Fidelity Entanglement Swapping, M. Daniell, J.-W. Pan, Gregor Weihs, A. Zeilinger, University of Vienna, Wein, AUSTRIA
The latest results on teleporting entanglement are presented. By a projective measurement on two previously independent photon pairs we create entangled states which show correlations that can violate a Bell-type inequality.
 
 
QMB4 9:30 - 9:45
Spatial Entanglement of Twin Quantum Images, P. Navez, E. Brambilla, Alessandra Gatti, Universita di Milano, Milano, ITALY, L. A. Lugiato, Universita dell'Insubria, Como, ITALY
We show that the spatial entanglement of two images obtained by parametric amplification is complete, i.e. concerns both amplitude and phase. These results may pave the way for applications to quantum teleportation of images and quantum cryptography.
 
 
QMB5 9:45 - 10:00
Entanglement Purification of Gaussian Continuous Variable Quantum States, Lu-Ming Duan, G. Giedke, J. Cirac, Peter Zoller, Universitaet Innsbruck, Innsbruck, AUSTRIA
We describe an entanglement purification protocol to generate maximally entangled states with high efficiencies from realistic Gaussian continuous entangled states. A cavity scheme is propsed to experimentally implement the purification protocol.
 
 
QMB6 10:00 - 10:15
Quantum Cryptography with Bright Entangled Beams, Christine Silberhorn, N. Korolkova, Gerd Leuchs, Universitaet Erlangen-Nuernberg, Erlangen, GERMANY
We suggest a quantum cryptography scheme using continuous EPR correlations of bright optical beams. One particular feature of this scheme is the degree to which it tolerates losses and other limiting factors.
 
 
QMB7 10:15 - 10:30
EPR Correlation and Quantum Noise Squeezing of Output Light Fields, Changde Xie, Yun Zhang, Hai Wang, Xiaoying Li, Jietai Jing, Kunchi Peng, Shanxi University, Taiyuan, CHINA
The ralations between the quantum variances of output signal and idler modes as well as superposed modes from a narrowband Nondegenerate Optical Parametric Amplifier (NOPA) are theoretically derived. The bright EPR beams, bright quadrature phase-squeezed light and quadrature amplitude-squeezed vacuum are experimently obtained with a semimonolithic NOPA.
 
 
11:00 - 12:30
Session: Spatial Quantum Structures
Presider: Maxi San Miguel, Universidad de las Islas Beleares, SPAIN
 
 
QME1 11:00 - 11:15
Quantum Fluctuations in a Continuous Vectorial Kerr Cavity Model, Roberta Zambrini, Instituto Mediterraneo de Estudios Avanzados, Palma de Mallorca, SPAIN, Miguel Hoyuelos, Alessandra Gatti, Universita di Milano, Milano, ITALY, Pere Colet, Universidad de las Islas Baleares, Palma de Mallorca, SPAIN, Luigi Lugiato, Maxi San Miguel, Universita di Milano, Milano, ITALY
We study correlations of the fields fluctuations in a vectorial Kerr cavity above threshold of pattern formation, accounting all transverse modes. The strong correlation between x-polarized pump and y-polarized pattern allows quantum non-demolition measurement.
 
 
QME2 11:15 - 11:30
Quantum Correlations in Noise-Sustained Optical Patterns, Stephen Barnett, University of Strathclyde, Glasgow, Scotland, UK, Roberta Zambrini, Gonzalo Izus, Maxi San Miguel, Pere Colet, Universidad de las Islas Baleares, Palma de Mallorca, SPAIN
Optical parametric oscillators with walk-off, in convective unstable regime, display noise-sustained patterns as a macroscopic manifestation of amplified and spatially structured quantum noise. We characterize the equantum fluctuations and correlations in these patterns.
 
QME3 11:30 - 11:45
Spatial Squeezing and Super-Resolution in Optical Imaging, Mikhail Kolobov, Universitaet GH, Essen, GERMANY, Claude Fabre, Universite de P. et M. Curie, Paris, FRANCE
Using a full quantum description of light propagation in an aperture-limited optical system, we study the influence of quantum fluctuations on optical resolution, and the means to enhance it by nonclassical states of light.
 
 
QME4 11:45 - 12:00
Quantum Limits for Resolution of Beam Displacements, Stephen Barnett, University of Strathclyde, Glasgow, Scotland, UK, C. Fabre, Agnes Maitre, Universite Pierre et Marie Curie, Paris, FRANCE
We derive the quantum limit for resolution of lateral displacement of an optical beam and demostrate the connection between this limit and that arising in optical interferometry.
 
QME5 12:00 - 12:15
Transverse Distribution of Quantum Fluctuations and Correlations in a Spatial Soliton, Nicolas Treps, Claude Fabre, Universite Pierre et Marie Curie, Paris, FRANCE
We study the propagation of local quantum fluctuations in spatial solitons, and show that the quantum noise reduction is "focused" in the center of the soliton, and that strong quantum correlations develop between different areas.
 
 
QME6 12:15 - 12:30
Noiseless Amplification of Images and Multimode Squeezed States Produced by a Confocal Parametric Oscillator, Alessandra Gatti, Universita di Milano, Milano, ITALY, S. Mancini, K. Petsas, Universita di Milano, Milano, ITALY, L. A. Lugiato, Universita dell'Insubria, Como, ITALY
We investigate the noiseless amplification of an optical image by a confocal resonator containing a c2 medium. We demostrate the possibility of preserving the signal-to-noise ratio while amplifying uniformly the entire image. When the deveice is used to produce squeezed states, a significant level of squeezing can be detected in small portions of the beam cross section.
 
 
12:30 - 13:30
Session: Symposium on Quantum Entanglement II
Presider: Gunnar Bjork, Royal Institute of Technology, SWEDEN
 
 
QMH1 12:30 - 12:45
Beyond Werner: Making Optimally Entangled Arbitrary Purity States, Andrew White, William Munro, University of Queensland, AUSTRALIA, D.F.V. James, Paul Kwiat, Los Alamos National Laboratory, Los Alamos, NM, USA
We efficiently produce optimally-entangled photon pair for states of any purity, obtaining the density matrices via quantum tomography, and using measures of entanglement and purity, compare these with the Werner states.
 
QMH2 12:45 - 13:00
Conditional Measurement of the Photon Number by Optical Pulse Collision, Friedrich Koenig, T. Rechtenwald, M. Zielonka, R. Steidl, Gerd Leuchs, A. Sizmann, Universitaet Erlangen-Nuernberg, Erlangen, GERMANY
The collision of fiber-optical pulses creates spectral correlations for quantum-nondemoltion measurements of the photon number. Photocurrent fluctuations of a signal pulses were suppressed to (76±5)% of the shot noise level using the meter pulse.
 
 
QMH3 13:00 - 13:30 (Invited)
Quantum Information With Continuous Variables, T.C. Ralph, University of Queensland, St Lucia, AUSTRALIA
The use of continuous variables in quantum information offers certain advantages over discrete systems due to the additional degrees of freedom available. In this talk we discuss new directions in continuous variable quantum information.
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