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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 - WEDNESDAY

12 - 14 September, Nice Acropolis, Nice, France

 

MONDAY

TUESDAY

WEDNESDAY

THURSDAY

FRIDAY

TUESDAY POSTERS WEDNESDAY POSTERS THURSDAY POSTERS

 

ROOM 1
 
08:30 - 10:30
Session: High Power Solid-State Lasers
Presider: Ernst Wintner, Technische Universitaet Wien, AUSTRIA
 
 
CWB1 8:30 - 9:00 (Invited)
Vulcan: A Petawatt Laser Facility for 1021Wcm-2 Experiments, John Collier, C.B. Edwards, C.N. Danson, M.H.R. Hutchinson, D. Neely, B. Wyborn, Rutherford Appleton Laboratory, Didcot, Oxfordshire, UK
We report on a 3 year development programme to establish a Petawatt beamline on the Vulcan laser to deliver intensities >1021 Wcm-2 by mid 2002.
 
 
CWB2 9:00 - 9:15
High-Power Room-Temperature Intracavity-Pumped Ho:YAG Laser, R.A. Hayward, W. Andrew Clarkson, David C. Hanna, University of Southampton, Southampton, UK
A Ho:YAG laser is intracavity-pumped in a diode-bar-end-pumped Tm: YAG laser yielding 7.2W of output at 2.09µm for 53.4W of incident diode pump power. The slope efficiency with respect to incident diode power was 17.5%.
 
 
CWB3 9:15 - 9:30
General Analytical Model for the Thermal Effects in High-Power Solid-State Lasers, Thomas Graf, M. Schmid, Heinz Weber, University of Bern, Bern, SWITZERLAND
To optimise the thermal effects in our lasers with output powers up to currently 620W we derived general, analytical and explicit expressions for the thermally induced optical distortions for arbitrary but cylindrically symmetric situations.
 
CWB4 9:30 - 9:45
Air-Cooled Diode-End-Pumped Nd:YLF MOPA, Gilles Feugnet, Arnaud Brignon, Christian Larat, Didier Rolly, Muriel Schwarz, Jean Paul Pocholle, Eric Lallier, Thomson CSF LCR, Orsay Cedex, FRANCE
A 50 mJ diode-end-pumped air-cooled Nd:YLF MOPA is described. The oscillator and the amplifier used the same pumping head, each made of a 1-kW-peak-power high-brightness stack coupled to a Nd:YLF crystal by a lens duct.
 
 
CWB5 9:45 - 10:00
High-Power Ti:Sapphire Regenerative Amplifier Operating at 50Hz with High Beam Quality, Shinji Ito, Femtosecond Technology Association, Tsukuba, JAPAN, Taisuke Miura, Keio University,Yokohama, JAPAN, Zhigang Zhang, New Energy & Industrial Tech Dev Org, Tokyo, JAPAN, Akira Endo, Femtosecond Technology Association, Tsukuba, JAPAN, Kenji Torizuka, Electrotechnical Laboratory, Ibaraki, JAPAN
A high-power Ti:sapphire regenerative amplifier operating at 50Hz with high beam quality is presented. We confirmed that higher-order aberrations of the wavefront of the amplified pulse were below l/10 at the wavelength of 800nm.
 
CWB6 10:00 - 10:15
High Average Power Diode-Pumped Composite Nd:YAG Laser Passively Q-Switched by Cr+4:YAG Saturable Absorber, Nicolaie Pavel, Sunao Kurimura, Ichiro Shoji, Jiro Saikawa, Takunori Taira, Institute for Molecular Science, Okazaki, JAPAN
An average power of 4.2-W in a near-diffraction limited beam was obtained from a diode-pumped cw laser with a composite Nd:YAG medium and Cr4+:YAG saturable absorber. Pulses of 17.5-ns duration, 285- J energy and peak power in excess of 16-kW resulted.
 
 
CWB7 10:15 - 10:30
High-Brightness Laser Systems with Fiber Phase Conjugation, Hans Eichler, Oliver Mehl, Thomas Riesbeck, Enrico Risse, Technische Universitaet Berlin, Berlin, GERMANY
Continously and pulsed pumped systems with average output powers up to of 200 W will be presented. High beam quality is achieved due to self-pumped phase conjugation by stimulated Brillouin scattering in silica fibers.
 
 
16:00 - 18:00
Session: Broad-Band Solid-State Lasers
Presider: Richard Moncorge, Universite de Caen, FRANCE
 
 
CWH1 16:00 - 16:30 (Invited)
Lasers Based on Broad Band Emitting Solid-State Materials, S. Kueck, Universitaet Hamburg, Hamburg, GERMANY
An overview about tunable solid state lasers based on transition metal ion and rare earth ion doped crystals will be given. Recent advances in this field of laser materials will be presented.
 
CWH2 16:30 - 17:00 (Invited)
New Materials Enabling New Laser Systems, William Krupke, Lawrence Livermore National Laboratory, Livermore, CA
Using various modeling, device design experience, and material property data bases, it is feasible today to identify and develop new classes of laser materials responsive to meeting requirements of valued applications. An example guided search leading to the Cr2+:ZnSe laser will be detailed.
 
 
CWH3 17:00 - 17:15
Excited State Absorption and Efficient Laser Generation of Cr2+:ZnSe, Alexander Podlipensky, V. Shcherbitsky, N.V. Kuleshov, Belarus State Polytechnical Academy, Minsk, BELARUS, V.I. Levchenko, V.N. Yakimovich, National Academy of Sciences of Belarus, Minsk, BELARUS, A. Diening, Michael Mond, S. Kueck, Guenter Huber, Universitaet Hamburg, Hamburg, GERMANY
Excited state absorption spectra were measured for Cr2+:ZnSe and efficient continuouis wave laser operation of Cr2+:ZnSe laser was demonstrated with output power as high as 1W.
 
CWH4 17:15 - 17:30
Efficient Broadly Tunable Cr2+:ZnSe Laser, Irina Sorokina, Evgeni Sorokin, Technische Universitaet Wien, Wien, AUSTRIA, Alberto Di Lieto, M. Tonelli, Universita di Pisa, Pisa, ITALY, Ralph Page, Kathleen Schaffers, Lawrence Livermore National Laboratory, Livermore, CA, USA
Tunable over 600 nm around 2.5 µm Cr:ZnSe laser is investigated in cw and mode-locked regimes. In free-running mode the laser exhibits narrow linewidth operation at > 0.5 W output power and 63% efficiency.
 
 
CWH5 17:30 - 17:45
A Cr2+ Doped Polycristal ZnSe Laser for the MIR, Sandrine Herriot, Jean Paul
Pocholle, Vincent Berger, Mai Pham-Thi, Eric Lallier, Thomson CSF LCR, Orsay Cedex, FRANCE, Francois Julien, Institut d' Electronique Fondamentale, CNRS, Paris, FRANCE
ZnSe polycristal Cr2+ doped laser operating at room temperature with an optical conversion efficiency as high as 20% is reported. Output energy close to 0.3 mJ at 2.4µm was obtained.
 
 
 
CWH6 17:45 - 18:00
250 mW From a 1 cm Cr4+:YAG Microchip Laser, Thomas Schibli, T. Kremp, Uwe Morgner, F.X. Kaertner, University of Karlsruhe, Karlsruhe, GERMANY
The first cw-Cr4+:YAG microchip laser is demostrated with more than 250 mW output power at 3.5 W absorbed pump power emitting in the wavelength range around 1500nm.
 
ROOM 2
 
08:30 - 10:30
Session: Power Scaling of Fibre and Waveguide Lasers
Presider: Rudiger Paschotta, Swiss Frederal Institute of Technology, SWITZERLAND
 
 
CWA1 8:30 - 8:45
High-Power and Tunable Operation of a Diode-Bar-Pumped Double-Clad Tm-Doped Silica Fibre Laser at 2µm, R.A. Hayward, W. Andrew Clarkson, P.W. Turner, Johan Nilsson, A.B. Grudinin, David C. Hanna,University of Southampton, Southampton, UK
A cladding-pumped Tm-doped fibre laser produced 14W of output at 2µm for 36.5W of launched pump at 787nm. Wavelength tuning from 1.87µm to 2.03µm at power levels >1.8W for 16W of pump is also reported.
 
 
CWA2 8:45 - 9:00
Fiber Amplifier Based High Power Picosecond Source, Holger Zellmer, A. Liem, P. Riedel, Friedrich-Schiller-Universitaet - Jena, Jena, GERMANY, T. Gabler, LDT GmbH & Co., Gera, GERMANY, S. Unger, Institut für Physikalische Hochtechnologie, Jena, GERMANY
A master oscillator fiber amplifier based picosecond source operating with an output power of more than 25 W with a repetition rate of 80 MHz is presented. Spectral properties are discussed.
 
 
CWA3 9:00 - 9:30 (Invited)
New Generation of Cladding Pumped Fibre Lasers and Amplifiers, A.B. Grudinin, Johan Nilsson, P.W. Turner. University of Southampton, Southampton, UK
In this talk we discuss recent developments in high power fibre lasers and amplifiers. Particular attention is paid to pump launching schemes and methods to minimise nonlinear distortion in fibre amplifiers.
 
 
CWA4 9:30 - 9:45
High Average Power CW Face Pumping of a Nd:YAG Planar Waveguide Laser with Diode Bars, Graham Friel, J.R. Lee, A.A. Cheswoth, D.P. Millas, H.J. Baker, Denis Hall, Heriot-Watt University, Edinburgh, UK
A compact Nd:YAG planar waveguide laser, face pumped in a multi-pass geometry by a 400 W cw diode bar stack is described. This simple, power scalable tecnique is evaluated for producing high brightness output.
 
 
CWA5 9:45 - 10:00
Improvement of the Emission Characteristics of a Multicore Fiber Laser Using Self Reproduction in a Multimode Interference Device (MMI), Peter Glas, D. Fischer, Martin Leitner, T. Sandrock, Marc Wrage, Max-Born-Institute, Berlin, GERMANY, Thomas Pertsch, Friedrich-Schiller-Universitaet - Jena, Jena, GERMANY, A.P. Napartovich, N.N. Elkin, A.G. Sukharev, V.N. Troshchieva, Troitsk Inst for Innov & Fusion Research, Moscow Region, RUSSIA
A MMI butt coupled to a 61 element multicore fiber laser selects a small number of supermodes improving the beam quality. A twofold threshold increase must be tolerated. The output power is 6 W at a slope efficiency of 40%.
 
 
CWA6 10:00 - 10:15
Chaotic Optical Fibre for Power Amplifier, Valerie Doya, P. Leproux, F. Mortessagne, O. Legrand, Universite de Nice, Nice, FRANCE, D. Pagnoux, P. Roy, IRCOM, Limoges, FRANCE
We propose a potential application of optical "chaotic" fibre for power amplification. A preliminary numerical study shows how using such structure can provide a uniform decay of pump power along the propagation.
 
 
CWA7 10:15 - 10:30
Efficient CW Ho3+-Doped Silica Fibre Laser Operating at 2 µm, A.S. Kurkov, E.M. Dianov, O.I. Medvedkov, G.A. Ivanov, V.A. Aksenov, V.M. Paramonov, S.A. Vasiliev, E.V. Pershina, Russian Academy of Sciences, Moscow, RUSSIA
For the first time we have realised a Ho3+ silica fiber laser using a Bragg grating as the input coupler and a fibre pump source at 1.15 µm. The output power of 280 mW at 2 µm is to our knowledge the highest value reported so far for Ho3+ silica fiber lasers.
 
 
 
16:00 - 18:00
Session: Nonlinear Optical Materials
Presider: Gerard Aka, ENSCP, FRANCE
 
 
CWG1 16:00 - 16:15
Evaluation of GdCOB and YCOB Frequency Conversion, in Principal and Out of Principal Plane Configurations, for the 1064 nm Nd:YAG Laser, Gerard Aka, ENSCP, Paris, FRANCE, F. Mougel, ENSCP, Paris, FRANCE and Chrismatec, FRANCE, D. Pelenc, Crismatec, Nemours Cedex, FRANCE, B. Ferrand, CEA Grenoble/LETI, Grenoble Cedex, FRANCE, D. Vivien, ENSCP, Paris, FRANCE
Large quality crystal of YCOB and GdCOB (typically 50 mm in diameter and 150 mm long) were grown from the melt by czonchraski technique. Samples were cut in and out of principal planes for type I and type II interactions. They were used to evaluate the SHG conversion efficiency of Q-switched Nd:YAG laser in relation with angular acceptance and walk-off angle.
 
 
CWG2 16:15 - 16:30
Influence of Hafnium in the Formation of Erbium and Hafnium Doped Bulk Periodic Poled Lithium Niobate Structures Grown by the Off-Centered Czochralski Technique, David Callejo, V. Bermudez, Universidad Autonoma de Madrid, Madrid, SPAIN, J. Capmany, Universidad Miguel Hernandez, Elche,
SPAIN, Ernesto Dieguez, Universidad Autonoma de Madrid, Madrid, SPAIN
Erbium and Hafnium doped Periodic Poled Lithium Niobate bulk crystals have been grown by off-centered Czochralski technique. It was observed that the Hafnium influences the formation of periodic structures, improving the maximum length of samples, and changing the compositional behavior of this structure.
 
 
CWG3 16:30 - 16:45
Profile of Second-Order Nonlinearity and Charge Distribution Induced in Thermally Poled Fused Silica, H. Guillet de Chatellus, S. Montant, Eric Freysz, Universite Bordeaux, FRANCE
Non collinear second harmonic generation is used to infer the profile of second-order nonlinearity and the charge distribution induced in poled fused silica.
 
 
CWG4 16:45 - 17:00
Role of Nanocrystal Morphology on the Third Order Non-Linear Response of Cu:Al2O3 Nanocomposite Films, R. del Coso, J. Olivares, J.M. Requejo, A. Suárez-García, J. Gonzalo, J. Solís, Carmen Afonso, Instituto de Optica, Madrid, SPAIN
The values of the third order nonlinear susceptibility of artificially structured films consisting of Cu nanocrystals embedded in an amorphous Al2O3 host are in the range 10-9 - 10-7 esu depending on the nanocrystals size and shape.
 
 
CWG5 17:00 - 17:30 (Invited)
Progress in Fabrication of Nonlinear Optical Borate Crystals for UV Generation, Y. Mori, Y.K. Yap, Masashi Yoshimura, Takatomo Sasaki, Osaka University, Suita, Osaka, JAPAN
I will present the recent development on nonlinear optical borate crystals, CLBO and GdYCOB, with the particular emphasis on the way to improve the reliability of these crystals for high power UV generation.
 
 
CWG6 17:30 - 17:45
Femtosecond Z-Scan Investigation of Third-Order Optical Nonlinearity in PbS-Polymer Nanocomposite, H.P. Li, Chan-Hin Kam, Yee-Loy Lam, W.X. Que, Nanyang Technological University, SINGAPORE, B. Liu, L.M. Gan, C.H. Chew, G.Q. Xu, National University of Singapore, SINGAPORE
Nonlinear refraction and nonlinear absorption in a newly synthesized PbS-polymer nanocomposite are measured by the Z-scan technique with femtosecond laser pulses at 780-nm wavelength. The microscopic origin for the observed optical nonlinearity is discussed.
 
 
CWG7 17:45 - 18:00
Glasses Embedded with IV-VI Semiconductor Quantum Dots and Their Application for Q-Switching of Mid-Infrared Lasers, A.D. Andreev, A.F. Ioffe Physicotechnical Institute, St. Petersburg, RUSSIA, Andrey Lipovskii, St. Petersburg Technical University, St. Petersburg, RUSSIA, A.M. Malyarevich, International Laser Center, Minsk, BELARUS, V.D. Petrikov, St. Petersburg Technical University, St. Petersburg, RUSSIA, K.V. Yumashev,International Laser Center, Minsk, BELARUS
The formation, characterization, modeling and experimental studies of PbS and PbSe quantum dots in phosphate glass are reported. The glass was used as saturable absorber for Q-switch operation of Er:glass (PbS, 1.54 µm) and Ho:YAG (PbSe, 2.1 µm) lasers.
 
ROOM 4
 
08:30 - 10:30
Session: Lasers in Medicine I
Presider: Theodore G. Papazoglou,
F.O.R.T.H. - I.E.S.L., Crete, Greece
 
CWC1 8:30 - 8:45
Method for Real Time Colour Doppler Optical Coherence Tomography, A.V. Zvyagin, J.B. FitzGerald, K.K.M.B. Silva, D.D. Sampson, University of Western Australia, Nedlands, W.A., AUSTRALIA
We propose and demonstrate a novel detection scheme, based on an electronic phase-locked loop, for colour Doppler optical coherence tomography. The technique enables, in real time, simultaneous velocity and reflectivity mapping in turbid media, which is a major advance over current post processing techniques.
 
CWC2 8:45 - 9:00
Nonlinear Coherent Four-Wave-Mixing in Optical Microscopy, Eric Potma, Wim de Boeij, Douwe Wiersma, University of Groningen, Groningen, THE NETHERLANDS
A detailed analysis of the imaging properties of coherent nonlinear microscopes is presented. The generation and propagation of coherent anti-Stokes Raman signals under high numerical aperture focussing conditions is treated beyond the slowly varying envelope approximation.
 
 
CWC3 9:00 - 9:15
Fluorescence Correlation Microscopy by Two-Photon Excitation: Investigation of Biological Probes at the Single Molecule Level, Elvire Guiot, Lab Charles Fabry de l'Institut d'Optique, Orsay Cedex, FRANCE, Patrick Georges, Alain Brun, Institut d'Optique, Orsay Cedex, FRANCE, G. Johannin, Laboratoire de Bioenergie Membranaire, Orsay Cedex, FRANCE, F. Merola, Lab de Photophysique Moleculaire, Orsay Cedex, FRANCE
We investigated the performances of fluorescence correlation microscopy by two-photon excitation. Diffusion constants for biological probes of different size were measured and the high sensitivity of our system allowed single fluorescein molecule detection.
 
 
CWC4 9:15 - 9:30
A New Method to Perform Time-Resolved Measurements, Jean-Michel Tualle, Eric Tinet, Universite Paris 13, Villetaneuse, FRANCE, Sigrid Avrillier, Universite Paris 13, Villetaneuse, FRANCE
We present here a new method to perform time-resolved measurements of the light scattered from turbid media. This low cost setup only uses the analysis of the speckle fluctuations due to a wavelength modulated source.
 
CWC5 9:30 - 10:00 (Invited)
Optical 3D-Sensors for Medical Diagnostics, Peter Andretzky, R. Lampalzer, K. Veit, L. Cloutot, Gerd Haeusler, Universitaet Erlangen-Nuernberg, Erlangen, GERMANY
Geometrical data about surface shape or volume structure are helpful for medical diagnostics: we will discuss sensors with micrometer resolution and tomographic capabilities for dermatologic applications, sensors with 10 micrometers resolution for dental applications and sensors with 200 micrometers resolution for orthopedics.
 
 
CWC6 10:00 - 10:15
Imaging of Phase Fluctuations by Optical Coherence Tomography, Christoph Hitzenberger, M. Sticker, R. Leitgeb, H. Sattmann, A.F. Fercher, University of Vienna, Vienna, AUSTRIA
We present an extension of optical coherence tomography that enables imaging of phase differences between light beams traversing a sample at closely spaced areas. Results and limits obtained in transparent and scattering samples are presented and discussed.
 
CWC7 10:15 - 10:30
Cell Manipulation by Using Diamond Micro-Particles as Handles for Laser Tweezers, Chi-Kuang Sun, Ying-Chieh Huang, National Taiwan University, Taipei, TAIWAN, R.O.C., Hung-Chi Liu, Academia Sinica, Taipei, TAIWAN, R.O.C., Bai-Ling Lin, Academia Sinica, Taipei, TAIWAN, R.O.C., Ping-Chen Cheng, SUNY - Buffalo, Buffalo, NY, USA
We report the micro-manipulation of biological cells by using irregular-shaped diamond micro-particles as handles for laser tweezers. Independent movements of linear translations and controllable rotations can be easily achieved and demonstrated.
 
 
16:00 - 18:00
Session: Ultrashort UV-,VUV-,
X-Ray and IR-Generation
Presider: Giulio Cerullo, Politecnico di Milano, ITALY
 
CWI1 16:00 - 16:15
Sub-10-fs Laser Driven High-Order Harmonic Generation: Spectral Characteristics and Modeling, Mauro Nisoli, Salvatore Stagira, Giulio Cerullo, Sandro De Silvestri, Orazio Svelto, CEQSE-CNR, Milano, ITALY, P. Villoresi, P. Ceccherini, L. Poletto, G. Tondello, Universita di Padova, Padova, ITALY, C. Altucci, Universita dellà Basilicata, Potenza, ITALY, R. Bruzzese, C. de Lisio, Universita di Napoli Federico II, Napoli, ITALY
Sub-10-fs laser driven hig-order harmonic spectral characteristics have been investigated both experimentally and theoretically. The measurements evidence peculiar features typical of quasi-single-cycle regime. A nonadiabatic three-dimensional numerical model is reported, in good agreement with experiments.
 
 
CWI2 16:15 - 16:30
Synthesis of Sub 6 fs Pulses in the UV Using Phase-Locked Raman Side-Band Generation, A. Nazarkin, Michael Wittmann Georg Korn,, Max-Born-Institute, Berlin, GERMANY
A laser pulse at 400nm is transmitted through a gas of SF6 molecules preliminary vibrationally excited in the impulsive regime. The output side-band Raman spectrum around 400nm can be compressed with positive or negative GVD to the shortest pulses ever generated in the UV.
 
 
CWI3 16:30 - 16:45
Characterization of Ultraviolet Filaments in Air, Jens Schwarz, Patrick Rambo, Jean-Claude Diels, University of New Mexico, Albuquerque, NM, USA
Ultrashort UV pulses are seen to self-focus in air and form filaments. Measurements (spectrum, size, conductivity) indicate that the balancing processes that produce the filament are different in the UV compared to the IR.
 
 
CWI4 16:45 - 17:00
Femtosecond Ultraviolet Pulse Generation by Femtosecond Pulse Up-Conversion in the Field of Picosecond Pump, A. Dubietis, G. Tamosauskas, Arunas Varanavicius, Gintaras Valiulis, R. Danielius, Vilnius University, Vilnius, LITHUANIA
We demonstrate efficient frequency up-conversion of femtosecond pulses under the envelope of the picosecond pump, yielding femtosecond (~200 fs) radiation at third (351 nm) and fifth (211 nm) harmonics of the Nd:glass laser.
 
 
CWI5 17:00 - 17:15
Five Optical Cycle Pulse Generation in the Mid-Infrared From an Optical Parametric Oscillator Based on a Periodically-Poled Lithium Niobate, T. Beddard, Majid Ebrahimzadeh, Derryck Reid, Wilson Sibbett, University of St. Andrews, St. Andrews, Fife, UK
We describe an optical parametric oscillator based on a periodically-poled lithium niobate generating nearly transform limited 53 fs duration pulses at a centre wavelength of 3µm, corresponsing to only 5 optical cycles.
 
 
CWI6 17:15 - 17:45 (Invited)
Ultrafast X-Ray Diffraction and X-Ray Absorption Spectroscopy, Christoph Rose-Petruck, Brown University, Providence, RI, USA
Laboratory-based ultrafast x-ray diffraction and x-ray absorption spectroscopy are emerging new methods for measuring the motions of atoms during physical or chemical transformations. Recent technological developments along with theoretical and experimental results are presented.
 
 
CWI7 17:45 - 18:00
Femtosecond X-Ray Fluorescence from Light Elements Excited by Laser Harmonics, Matthias Schnuerer, Ch. Streli, P. Wobrausckek, M. Hentschel, R. Kienberger, Technische Universitaet Wien, Wien, AUSTRIA, Christian Spielmann, Vienna University of Technology, Vienna, AUSTRIA, Ferenc Krausz, Technische Universitaet Wien, Wien, AUSTRIA
Using few-cycle-driven laser harmonic radiation, K-shell vacancies have been created in light elements (boron and carbon) on a time scale of a few femtoseconds for the first time.
 
ROOM 5
08:30 - 10:30
Session: Optoelectronic Systems Integration
Presider: Roel Baets, University of Ghent, BELGIUM
 
 
CWD1 8:30 - 9:00 (Invited)
Terabit/s Parallel Optical Connections to Silicon CMOS Chips: Lessons Learned from the SPOEC Technology Demonstrator, A.C. Walker, Heriot-Watt University, Edinburgh, Scotland, UK
Flip-chip integration of silicon-ICs with optical interface arrays, based on III-V semiconductors, can permit aggregate input-output data rates in the Tbit/s domain. Results from the European project "Smart Pixel Optoelectronic Connections" are discussed.
 
 
CWD2 9:00 - 9:15
A Monolithically Integrated Smart Pixel Consisting of a Photoconductive Receiver and a Non-Resonant Cavity LED, Merlin Welker, D. Zipperer, Universitaet Erlangen-Nuernberg, Erlangen, GERMANY, Peter Kiesel, University of Erlangen, Erlangen, GERMANY, S. Malzer, G.H. Doehler, Universitaet Erlangen-Nuernberg, Erlangen, GERMANY, R. Windisch, B. Dutta, P. Heremans, IMEC, Leuven, BELGIUM
We report on a monolithically intergrated smart pixel using a special photoconductive switch as receiver, directly driving a high effeciency non-resonant cavity LED (NRC-LED).
 
 
CWD3 9:15 - 9:30
Impact of Microcavity Regime on Low Voltage InGaAs Fabry-Perot Modulators, Declan Byrne, Trinity College of Dublin, Dublin 2, IRELAND, Paul Horan, School of Physics, Dublin 8, IRELAND, John Hegarty, Trinity College of Dublin, Dublin 2, IRELAND
Low voltage InGaAs MQW pin Fabry-Perot modulator structures are at the boundary of the microcavity regime. Here work is presented on the impact of the microcavity regime on the modulator performance.
 
 
CWD4 9:30 - 9:45
Dual Layer Digital Versatile Disk Pickup Integrating Opto-Electronic and Diffractive Elements, S. Bhattacharya, S. Stankovic, D. Dias, GERMANY, M. Hain, R. Gloeckner, C. Karaboue, L. Benmohammadi, F. Guessous, Technische Universitaet Darmstadt, Darmstadt, GERMANY, Theo Tschudi, Darmstadt University of Technology, Darmstadt, GERMANY, M. Ferstl, E. Pawlowski, R. Steingrueber, B. Kuhlow, Heinrich-Hertz Institute, Berlin, GERMANY, L.L. Wang, Philips CFT, Eindhoven, THE NETHERLANDS
An optical pickup has been designed for reading information simultaneously from the two layers of a dual layer digital versatile disk. The fabrication and working of the diffractive and the liquid crystal elements are described in detail. Results of the integrated pickup system are presented.
 
CWD5 9:45 - 10:00
Fast Electro-Optical Lenses Using Liquid Crystals, M. Hain, Technische Universitaet Darmstadt, Darmstadt, GERMANY, R. Gloeckner, S. Bhattacharya, S. Stankovic, Technische Universitaet Darmstadt, Darmstadt, GERMANY, Theo Tschudi, Darmstadt University of Technology, Darmstadt, GERMANY
We investigated two types of liquid crystal lenses which allows electro-optical focussing in the range of F - 0.5m to F=infinity with switching times below 0.5 ms. The design will be explained and the optical performance characterised.
 
 
CWD6 10:00 - 10:30 (Invited)
Recent Development in Micro-Opto-Electro-Mechanical Systems (MOEMS), Ming Wu, UCLA, Los Angeles, CA, USA
Abstract not available.
 
 
16:00 - 18:00
Session: Parallel Optical Interconnects
Presider: Paul Horan, School of Physics, IRELAND
 
 
CWJ1 16:00 - 16:30 (Invited)
2-Dimensional Fiber-Based Optical Interconnect Between CMOS IC's, Roel Baets, L. Vanwassenhove, Marnik Brunfaut, Jan Van Campenhout, University of Gent, Gent, BELGIUM, J. Hall, Marconi Caswell Limited, UK, Karl Ebeling, University of Ulm, Ulm, GERMANY, Hans Melchior, Swiss Federal Institute of Technology, Zurich, SWITZERLAND, A. Neyer, University of Dortmund, GERMANY, Hugo Thienpont, R. Vounckx, Vrije Universiteit, Brussels, BELGIUM, J. Van Koetsem, Framatome Connectors International, BELGIUM, P. Heremans, IMEC-MAP, Belgium, D. Litaize, IRIT, FRANCE
In this paper, we report on a highly parallel optical interconnect approach allowing for direct interconnection between CMOS IC's by hybrid integration of CMOS circuits, 2D light source and detector arrays and optical pathways.
 
 
CWJ2 16:30 - 16:45
Input Coupling Measurements for Parallel Optical Interconnects Using Imaging Fiber Bundles and VCSEL Arrays, Sayan Mukherjee, Kent Geib, Kent Choquette, Sandia National Laboratories, Albuquerque, NM, USA, Matthew Robinson, Schott Fiber Optics, Southbridge, MA, USA
Imaging fiber bundles and 8x8 individually addressable VCSEL arrays have been investigated for their mutual compatibility for flexible parallel optical interconnects. Differences in crosstalk and noise for light propagation within core versus cladding have been quantified.
 
 
CWJ3 16:45 - 17:00
Programmable Network Interface for Parallel Optical Data Links, Fouad Kiamilev, Premanan Chandramani, P. Gui, Jeremy Ekman, University of Delaware, Newark, DE, USA, B. Vanvoorst, F. Rose, K. Driscoll, J. Allen Cox, Honeywell Technology Center, Minneapolis, MN, USA, Marc Christensen, Predrag Milojkovic, M. Haney, George Mason University, Fairfax, VA
We present programmable network interface hardware for parallel optical data links. The design is used to explore emerging protocols for 10Gbps data communication.
 
 
CWJ4 17:00 - 17:15
Collimation Characteristics of Stacked Planar Microlens for Parallel Optical Interconnects, Yasuhiko Aoki, Y. Shimada, Kenichi Iga, Tokyo Institute of Technology, Yokohama, JAPAN
We evaluated the collimated beam quality of a stacked planar microlens (PML) array for parallel optical interconnect sytems. The beam profile was good enough for low loss beam interconnect in micro-optical bench (MOB) scheme.
 
 
CWJ5 17:15 - 17:30
Axial Line Scanning Device for Display and Printing Applications, Stephan Falter, J. Kubaink, Keming Du, Fraunhofer Institut fuer Lasertechnik, Aachen, GERMANY, Peter Loosen, Fraunhofer Institut (IAF), Aachen, GERMANY, Reinhart Poprawe, Fraunhofer Institut fuer Lasertechnik, Aachen, GERMANY, M. Siegert, A. Eckau, Institut fuer Schicht- & Ionentechnik, Juelich, GERMANY, C. Buchal, FZI Research Center, GERMANY
For printing and imaging processes a prototype for an axial line-scanner was realized, consisting of a linear array of 32 independently switchable electrooptical modulators based on LiNbO3 waveguides generated by Ti-diffusion means.
 
CWJ6 17:30 - 17:45
Beam Steering via Wavelength Tuning in Arrayed Waveguide Gratings, W. Huang, B.C. Qiu, C. Massie, Amr Saher Helmy, Ann Catrina Bryce, John Marsh, University of Glasgow, Glasgow, Scotland, UK
Beam steering using AWGs in a GaAs/ AlGaAs laser structure is demostrated by tuning the wavelength. When operating 40nm below the material bandedge, tuning of 3nm was needed for a 2 phase shift.
 
 
CWJ7 17:45 - 18:00
Short - Pulse Transmission Characteristics of an Array-Waveguide Grating, John Devaney, Y.J. Chai, S. Abbasi Shahkooh, I. Khrushchev, J.D. Whiteaway, Ian White, University of Bristol, Bristol, UK
Ultrashort pulse reponse of an arrayed-waveguide grating with narrow free spectral range is investigated. Depending on the input pulse duration the AWG output represents a single elongated pulse or a regular train of pulses.
 
ROOM 6
 
08:30 - 10:15
Session: Nonlinear Organic Materials and Devices
Presider: Vittorio Degiorgio, Universita di Pavia, ITALY
 
CWE1 8:30 - 9:00 (Invited)
Optical and Electrical Processing of New Oriented Electrooptic Polymer Devices, Eric Toussaere, Ecole Normale Superieure de Cachan, Cachan, FRANCE
Electrooptic devices for telecommunications were made with polymer multilayer waveguides with optimized material resistivities. Various Mach-Zehnder intensity modulators have been characterized optically and electrically. Light polarization sensitivity and bias-field induced drift will be discussed.
 
 
CWE2 9:00 - 9:15
Study of the Influence of Metal and Ligand Properties on the Second-Order Nonlinear Optical Response of Organometallic Complexes by Hyper-Rayleigh Scattering, J.-B. Gaudry, P. Langot, Eric Freysz, Universite Bordeaux 1, Talence Cedex, FRANCE, L. Capes, J.-F. Letard, O. Kahn, Universite Bordeaux 1, Pessac Cedex, FRANCE
The strong influence of metal electron configuration and ligand nonlinear properties on the first-order molecular hyperpolarizability is evidenced for series of transitions metal (Mn, Fe, Co, Ni, Zn) in octahedral configuration by hyper-Rayleigh scattering experiments.
 
 
CWE3 9:15 - 9:30
Photochemical Stability of Highly Nonlinear Optical Chromophores for Electro-Optic Applications, Martin Bösch, C. Fischer, C. Cai, I. Liakatas, Christian Bosshard, P. Günter, ETH Hoenggerberg, Zürich, SWITZERLAND
The photochemical stability of highly nonlinear optical bithiophene chromophores is investigated in different atmospheres at visible and infrared wavelengths. Experiments in guest-host systems indicate that these chromophores are excellent candidates for electro-optic applications.
 
 
CWE4 9:30 - 10:00 (Invited)
Frequency Conversion Through Parametric Interaction and Cascaded Processes in a NPP Crystal, GianPiero Banfi, P.K. Datta, Vittorio Degiorgio, D. Fortusini, Universita di Pavia, Pavia, ITALY, E.E.A. Shepherd, J.N. Sherwood, University of Strathclyde, Glasgow, UK
In a 2.88-mm-thick N-(4-nitrophenyl)-L-prolinol crystal, nearly-degenerate frequency conversion through cascading is efficiently obtained at 107W/cm2 pump-intensity. Parametric generation from quantum noise, with 10% conversion efficiency in one pass, is observed around 108W/cm2.
 
 
CWE5 10:00 - 10:15
Organic Nanocrystals in Sol-Gel Glasses for Photonic Applications, Irene Wang, O. Stephan, Y. Kervella, A. Corval, Patrice Baldeck, Universite Joseph Fourier, St Martin d'Heres Cedex, FRANCE, N. Sanz, A. Ibanez, CNRS, FRANCE
We report on a new type of materials for photonic applications: organic nanocrystals embedded in sol-gel glasses. These materials have promising potential for optical power limiting, electro-optic modulation and optical data storage.
 
 
CWE6 10:15 - 10:30
Nonlinear Refraction Studies in Carbon Nanotubes, Laurent Vivien, DGA/CTA/LOT, Arcueil, FRANCE, Francois Hache, Ecole Polytechnique, Palaiseau, FRANCE, D. Riehl, DGA/CTA/LOT, Arcueil, FRANCE, E. Anglaret, Universite Montpellier II, Montpellier, FRANCE
Nonlinear refraction of carbon nanotubes has been measured by using closed apreture Z-scan experiments for different pulse durations. Depending on the temporal regime (from 200 fs to 100ns), we obtain a thermal effect or an optical Kerr effect.
 
 
16:00 - 18:00
Session: Polymer Lasers
Presider: Eric Toussaere, Ecole Superieure de Cachan, FRANCE
 
 
CWK1 16:00 - 16:30 (Invited)
Elastomeric Molding, Stamping and Near-Field Photolithographic Methods for Integrated Optics and Electronics, J.A. Rogers, Zhenan Bao, A. Dodabalapur, Bell Laboratories, Lucent Technologies Murray Hill, NJ, USA
Molding, stamping and optical near-field methods that use elastomeric transfer elements are versatile, low cost techniques for nanofabrication. This talk describes the application of these methods to molded plastic lasers and printed organic electronic systems.
 
 
CWK2 16:30 - 16:45
A Nearly Diffraction Limited Surface Emitting Conjugated Polymer Laser Utilizing a 2D Photonic Bandstructure, Stefan Riechel, Ludwig-Maximilians-Universitaet Muenchen, Muenchen, GERMANY, C. Kallinger, Ludwig-Maximilians-Universitaet Muenchen, Muenchen, GERMANY, Uli Lemmer, J. Feldmann, University of Munich, Muenchen, GERMANY, A. Gombert, V. Wittwer, Fraunhofer Institut (IAF), Freiburg, GERMANY, U. Scherf, Max-Planck Institute, Mainz, GERMANY
Utilizing a two-dimensional photonic bandstructure based feedback, we have realized a flexible conjugated polymer laser with nearly diffraction limited surface emission. We identify the underlying feedback mechanism and demonstrate monomode laser operation.
 
CWK3 16:45 - 17:00
Travelling-Wave Lasing of TPD Molecules and TPD-Arylene Copolymers, Alfons Penzkofer, W. Holzer, Universitaet, Regensburg, GERMANY, H. Tillmann, D. Raabe, M. Helbig, H.-H. Hoerhold, INNOVENT Technologieentwicklung e.V., Jena, GERMANY
Waveguide traveling-wave lasing in neat films of the electrically active triphenylamine dimer molecule TPD, of a non-conjugated TPD-xylylene copolymer and of conjugated TPD-PPV copolymers is achieved by ultraviolet picosecond pulse excitation.
 
 
CWK4 17:00 - 17:15
Periodically Structured Polymers for Tunable Laser Applications, Licinio Rocha, Vincent Dumarcher, Céline Fiorini, Christine Denis, Paul Raimond, Jean-Michel Nunzi, CEA LETI DEIN SPE, Gif sur Yvette cedex, FRANCE
Compact organic lasers are developed using a distributed feedbacks scheme. Permanent modulation of the polymer refractive index is achieved using an original technique for photoinduced patterning of surface-relief gratings, using laser-controlled molecular motion.
 
 
 
CWK5 17:15 - 17:30
Gain Threshold Analysis of Circular Surface Relief Distributed Feed-back Organic Semiconductor Lasers, G.F. Barlow, K. Alan Shore, University of Wales, Bangor, Wales, UK
It is shown that threshold gain values of order 100cm-1 can be obtained using circular distributed feedback organic semiconductor lasers. The performance of the device is strongly determined by the performance of the pumping region.
 
 
CWK6 17:30 - 17:45
Ultrafast Förster Transfer in a Highly Fluorescent Polymer Blend, Giulio Cerullo, Guglielmo Lanzani, ITALY, Mauro Nisoli, Salvatore Stagira, Sandro De Silvestri, Politecnico di Milano, Milano, ITALY, T. Virgili, D.G. Lidzey, Donal Bradley, University of Sheffield, Sheffield, South Yorkshire, UK
Ultrafast relaxation in blends of poly (9,9-dioctylfluorene) doped with tetraphenylporphirin have been studied as a function of doping concentration. Experimental results were interpreted by a simple numerical model, showing the competition of Förster energy transfer and bimolecular processes.
 
CWK7 17:45 - 18:00
Polarization Dependent Threshold of a Polymer Laser, S. A. van den Berg, G. W. 't Hooft, E. R. Eliel, Leiden University, Leiden, THE NETHERLANDS
The threshold of an optically pumped polymer laser depends strongly on the polarization of the pump light. The gain anisotropy induced by the pump polarization persists for a long time because the dipoles reorient slowly.
 
 
ROOM 7
 
08:30 - 10:30
Session: High-Resolution Spectroscopy
Presider: R. Wynands, Bonn University, GERMANY
 
QWA1 8:30 - 9:00 (Invited)
Parity Violation Test in Chiral Molecules by Laser Spectroscopy at 10-13 Level, M. Ziskind, T. Marrel, Christophe Daussy, Ch. Bordé, Ch. Chardonnet, Universite Paris-Nord, Villetaneuse, FRANCE
We report on a test of parity violation between enantiomers of CHFClBr. The rovibrational frequencies of these enantiomers have been found to be identical with 13 Hz (I.e. 4.10-13) precision. New improvements will be presented.
 
 
QWA2 9:00 - 9:15
Precision VUV Laser Spectroscopy on Ar, Kr and Xe, Iavor Veltchev, F. Brandi, Wim Hogervorst, W. Ubachs, Vrije Universiteit, Amsterdam, THE NETHERLANDS
A narrowband laser source, tunable in the range 58-115 nm, is used for a high precision study of isotope shifts and hyperfine structures in Ar, Kr and Xe noble gas atoms. For Ar a more accurate value for the ionization potential could be determined.
 
 
QWA3 9:15 - 9:30
Model Systems and Photo-Kinetics of Single N-V Defect Centers in Diamond, Sergei Kilin, A. P. Nizovtsev, T. M. Maevskaya, National Academy of Sciences of Belarus, Minsk, BELARUS, F. Jelezko, C. Tietz, J. Wrachtrup, University of Stuttgart, Stuttgart, GERMANY
Simple model systems for laser-excited Nitrogen-Vacancy (N-V) defect centers in diamond are proposed and used to describe consistently a wide range of experiments dealing both with single centers and with their ensembles.
 
 
QWA4 9:30 - 9:45
Fiber-Coupled Cryogenic Optical Resonators, Claus Braxmaier, , H. Müller, A. Peters, J. Mlynek, Universitaet Konstanz, Konstanz, GERMANY, S. Schiller, Heinrich-Heine-Universitaet Düsseldorf, GERMANY
We report on the use of fiber coupled cryogenic optical sapphire resonators for laser frequency stabilization. A frequency stability of 2·10-15 for =1hour integration time has been demonstrated which is among the best values ever obtained for optical oscillators.
 
QWA5 9:45 - 10:00
Cavity Ringdown Spectroscopy with a Continuous-Wave Laser and a Rapidly Swept Optical Cavity, Brian Orr, Macquarie University, North Ryde, NSW, AUSTRALIA, Yabai He, Macquarie University, Sydney, NSW, AUSTRALIA
A rapidly swept optical cavity is used to record high-resolution cavity ringdown laser absorption spectra with a continuous-wave tunable diode laser. This novel approach eliminates the need for a fast optical switch or cavity locking.
 
 
QWA6 10:00 - 10:15
High Resolution Spectroscopy with Novel Non-Linear Devices, Paolo De Natale, P Cancio, D Mazzotti, G Giusfredi, Instituto Nazionale di Ottica Applicata, Firenze, ITALY, N Picque, European Lab. for Non-Linear Spectroscopy, Firenze, ITALY
Spectroscopic results concerning CO2 transitions at 4.3 µm and I2 Lines around 541 nm are reported. Their relevance for high sensitivity tests of fundamental principles and novel frequency references is discussed.
 
 
QWA7 10:15 - 10:30
All-Solid-State, Single Frequency cw UV-Laser Source Using Doubly-Resonant Sum-Frequency Generation, Harald Schnitzler, T Boley, D. Weise, A. Schmidt, A. Peters, Universitaet Konstanz, Konstanz, GERMANY, S. Schiller, Heinrich-Heine-Universitaet Duesseldorf, GERMANY
We describe a novel approach for single-frequency uv light generation. A high-power, frequency-doubled cw Nd:YAG-laser is mixed with a diode laser in a doubly-resonant cavity containing LBO to produce frequency-tunable UV radiation with linewidth <1 MHz, low frequency drift, and output power > 1 mW, well suited for spectroscopy.
 
 
16:00 - 18:00
Session: Matter-Wave Interferometry
Presider: Mark Raizen, University of Texas at Austin, TX USA
 
 
QWE1 16:00 - 16:15
A Matter Wave Interferometer with the K2 Molecule, Christian Lisdat, Matthias Frank, Horst Knoeckel, Eberhard Tiemann, Universitaet Hannover, Hanover, GERMANY
We show first results and systematic investigations of a matter wave interferometer with the K2 molecule and compare these with numerical simulations. The capability of this experiment for investigations of cold collisions is discussed.
 
 
QWE2 16:15 - 16:30
Atomic Spatial Coherence Monitoring and Engineering with Magnetic Fields, Olivier Gorceix, E. Maréchal, T. Miossec, R. Long, Jean-Luc Bossennec, R. Barbé, J.-C. Keller, Universite Paris-Nord, Villetaneuse, FRANCE
Pulsed inhomogeneous magnetic fields are used to measure and to modify the spatial coherences of a cold cesium atom cloud.
 
 
QWE3 16:30 - 16:45
Writing A Chromium Superlattice With Light Forces, Thomas Schulze, B. Brezger, T. Muether, D. Juegens, M. Oberthaler, T. Pfau, J. Mlynek, Universitaet Konstanz, Konstanz, GERMANY
Atom lithography usually produces structures on the wavelength scale using standing light waves. Larger scales can be achieved using spatial phase changes between two standing light waves. A chromium superlattice structure with 200µm period was realized experimentally.
 
 
QWE4 16:45 - 17:00
Field Induced Electron - Ion Recombination: A Novel Route Towards Neutral (Anti-) Matter, L D. Noordam, C Wesdorp, FOM Institute AMOLF, Amsterdam, THE NETHERLANDS, F Robicheaux, Auburn University, AL, USA
We present a novel approach to the preparation of neutral (anti-) matter. The scheme is based on recombination of a free electron and an ion, and can be considered as the inverse of pulsed-field ionization.
 
 
QWE5 17:00 - 17:15
Dimensional Effects on Dynamical Localization with Cold Cesium Atomes, J. Ringot, P. Szrfitgiser, J.C. Garreau, Laboratoire de Physique des Lasers, D'Ascq, Cedex, FRANCE, D. Delande, Universite de Pierre et Marie Curie, Paris , FRANCE
This paper shows the first experimental evidence of the effect on increased dimensionality on the signature of quantum chaos known as dynamical localization. A cold atom realisation of the kicked rotor is used.
 
 
QWE6 17:15 - 17:30
Coherent Backscattering of Light by Cold Atoms, Christian Miniatura, G. Labeyrie, C. Mueller, J.-C. Bernard, Robin Kaiser, Universite de Nice, Valbonne, FRANCE
We report the first observation of coherent backscattering of light from a sample of laser-cooled atoms. Contrary to classical scatterers, we observed small enhancement factors. This is attributed to the atom's quantum internal structure.
 
 
QWE7 17:30 - 18:00 (Invited)
Coherence and Decoherence in de Broglie Interference of Fullerenes, Markus Arndt, Olaf Nairz, Julia Petschinka, Julian Voss-Andreae, Gerbrand Van der Zouw, Claudia Keller, Anton Zeilinger, Universitaet Wien, Wein, AUSTRIA
We demonstrate de Broglie interference of a thermal fullerene beam diffracted at a nanofabricated grating. We discuss coherence and decoherence for a new set of experiments with much improved collimation and velocity selection.
 
ROOM 8
 
08:30 - 10:30
Session: Dynamics of Coupled Systems
Presider: Gian Luca Lippi, Institut Non Lineare de Nice, Valbonne, FRANCE
 
 
QWB1 8:30 - 9:00 (Invited)
Dynamics of Coupled Semiconductor Lasers: Equivalence with Bose-Einstein Condensates, P. Coullet, M. Clero, M. Vanderbergh, Institut Non Lineaire de Nice, Valbonne, FRANCE, M. Giudici, J.R. Tredicce, Institut Non Lineaire de Nice, Valbonne, FRANCE
We show experimentally and theoretically that the dynamics of longitudinally coupled semiconductor lasers is equivalent to the dynamical behavior we can expect in two interacting Bose-Einstein condensates.
 
QWB2 9:00 - 9:15
Dynamical Behaviour of Mutually Coupled Semiconductor Lasers: Experimental Investigations, Tilmann Heil, Ingo Fischer, Wolfgang Elsäßer, Darmstadt University of Technology, Darmstadt, GERMANY, Josep Mulet, Instituto Mediterraneo de Estudios Avanzados, Palma de Mallorca, SPAIN, Claudio Mirasso, Universidad de las Islas Baleares, Palma de Mallorca, SPAIN
The dynamics of two mutually coupled semiconductor lasers in face-to-face configuration has been experimentally studied. In dependence of the pumping and relative detuning, we find synchronized chaotic oscillations in combination with dynamical symmetry breaking.
 
QWB3 9:15 - 9:30
Intensity and Phase Dynamics of Two or Three Spatilly Coupled Microchip Lasers, Michael Möller, B. Forsmann, M. Jansen, Institut fuer Angewandte Physik, Muenster, GERMANY
Coupled Nd:YVO4 microchip lasers in various two-dimensional arrangements exhibit different types of intensity and phase correlation instabilities, from synchronous intensity pulsations to complicated oscillations revealing highly nonlinear interactions between frequency-locked states.
 
QWB4 9:30 - 9:45
Synchronization of A Semiconductor Laser Array by Time Delay, Gregory Kozyreff, Universite Libre de Bruxelles, Bruxelles, BELGIUM, A. G. Vladimirov, St. Petersburg State University, St. Petersburg, RUSSIA, Paul Mandel, Universite Libre de Bruxelles, Bruxelles, BELGIUM
We show that it is possible to synchronize a semiconductor laser array by a delayed optical feedback. This feedback can be induced and controlled by an external mirror which couples globally the lasers.
 
QWB5 9:45 - 10:00
Joint Time-Frequency Analysis of Chaos Synchronization in a Microchip Laser Array, Jiann-Shing Lih, Jyh-Long Chern, National Cheng-Kung University, Tainan, TAIWAN, R.O.C., Kenju Otsuka, Tokai University, Kanagawa, JAPAN
Chaos synchronization in a solid-state laser array has been characterized by a joint time-frenquency analysis (JTFA). Matching and similarity functions of JTFA patterns obtained from experimental time series revealed hidden dynamics in synchronized chaos.
 
 
QWB6 10:00 - 10:15
Detection of Weak Optical Feedback by Linear and Non Linear Laser Dynamics, Eric Lacot, Richard Day, Frederic Stoeckel, Universite Joseph Fourier, Saint Martin d'Heres Cedex, FRANCE
The dynamics of a class-B laser is already very sensitive to optical feedback. We show here that non linear dynamical effects can enhance still further this sensitivity.
 
 
QWB7 10:15 - 10:30
Dynamical Instability in a Laser-Diode-Pumped Multitransition-Oscillation Nd:YAG Laser, Siao-Lung Hwong, Jyh-Long Chern, Tsong-Shin Lim, National Cheng-Kung University, Tainan, TAIWAN, R.O.C., Kenju Otsuka, Tokai University, Kanagawa, JAPAN
Dynamical instability and chaotic relaxation oscillations have been observed in a laser-diode-pumped microchip Nd:YAG laser operating in a double-transition oscillation regime, in which both 1064-nm and 1061-nm emissions occur simultaneously.
 
 
16:00 - 18:00
Session: Optical Parametric Oscillators
Presider: J.R. Tredicce, Institut Non Lineare de Nice, FRANCE
 
QWF1 16:00 - 16:15
Bloch Domain Walls in Transverse Patterns in Type-II Optical Parametric Oscillators, Gonzalo Izús, Marco Santagiustina, Maxi San Miguel, Instituto Mediterráneo de estudios Avanzados, Palma de Mallorca, SPAIN
Transverse pattern formation in type-II Optical Parametric Oscillators is investigated. Mirror birefringence and dichroism originate Bloch walls between phase domains at which the field amplitude does not vanish. This leads to states with persistent dynamics.
 
 
QWF2 16:15 - 16:30
Kinetics of the Formation of Domain Walls in the Degenerate Optical Parametric Oscillator, M. Le Berre, E Ressayre, Andree Tallet, Universite Paris-Sud, Orsay, FRANCE, M. Tlidi, Paul Mandel, Universite Libre de Bruxelles, Bruxelles, BELGIUM
Kinetics of the domain walls occuring in the degenerate parametric oscillator is studied. Circular and stripped domains are formed with the t1/3 scaling law; the size of domains of patterns and labyrinths increases as t1/5.
 
 
QWF3 16:30 - 16:45
Nonlineaer Front Competition and Secondary Absolute Instabilities in Optical Parametric Oscillators, Helene Ward, Majid Taki, Pierre Glorieux, Univ. des Sciences & Tech. de Lille, Villeneuve d'Ascq cedex, FRANCE
We study the nonlinear competition between destabilizing spatial-temporal modes in optical parametric oscillators in presence of walk-off. The stablility of nonlinear states is investigated and convective/absolute nature of secondary instabitlities is determined.
 
 
QWF4 16:45 - 17:00
Vectorial Vortices in Type-II Optical Parametric Oscillators, Marco Santagiustina, Universita di Padova, Padova, ITALY, E. Hernandez-Garcia, Maxi San Miguel, Universidad de las Islas Baleares, Palma de Mallorca, SPAIN, Gian-Luca Oppo, Andrew Scroggie, University of Strathclyde, Glasgow, UK
We characterise vectorial optical vortices in a Type-II OPO model. Regular and irregular distributions of vectorial vortices are discussed with special emphasis on their robustness with respect to changes of the diffraction coefficients.
 
 
QWF5 17:00 - 17:15
Transverse Structures in a Triply Resonant OPO: From Optical Patterns to Quantum Structures, Agnes Maitre, Nicolas Treps, S. Ducci, Claude Fabre, Universite Pierre et Marie Curie, Paris Cedex 5, FRANCE
Transverse pattern formation is observed in Optical Parametric Oscillators opersting in transverse degenerate cavities. The emitted fields are expected to present specific nonclassical spatial properties.
 
QWF6 17:15 - 17:30
All-Optical Signal Regeneration Using Parametric Soliton Switch, G. R. Collecutt, Peter Drummond, University of Queensland, St. Lucia, Queensland, AUSTRALIA
An all-optical AND gate using type II parametric spatio-temporal simulton formation in a planar waveguide is numerically demonstrated. Applications to optical multiplexing, de-multiplexing, and signal regeneration are discussed.
 
 
QWF7 17:30 - 17:45
Signal-Idler Self-Phase Locking in a Type II Optical Parametric Oscillator, Claude Fabre, L. Longchambon, Universite de P. et M. Curie, Paris Cedex 05, FRANCE, E. J. Mason, N. C. Wong, Massachusettes Inst. of Technology, Cambridge, MA, USA
A type II OPO with an intracavity waveplate may exhibit self-phase locking at frequency degeneracy. We present the detailed theory of this phenomenon and its implications in metrology and quantum optics.
 
 
QWF8 17:45 - 18:00
Opto-Thermal Instabilites in the Optical Parametric Oscillator, Pierre Suret, Universite des Sciences & Technologies de Lille, Villeneuve d' Ascq Cedex, FRANCE, Dominque Derozier, Laboratoire de Physique des Lasers, Villeneuve d' Ascq Cedex, FRANCE, Marc Lefranc, J. Zemmouri, Serge Bielawski, Universite des Sciences & Technologies de Lille, Villeneuve d' Ascq Cedex, FRANCE
We identify the origin of an instability known to affect the c.w. OPO at high pumping rates. Sustained relaxation oscillations result from the interplay between a slow variable (temperature) and the optical bistability cycle.
 
ROOM 9
 
08:30 - 10:30
Session: Quantum Effects I
Presider: Claude Fabre, Universite de Pierre et Marie Curie, FRANCE
 
QWC1 8:30 - 8:45
Quantum Retrodiction, Stephen Barnett, John Jeffers, University of Strathclyde, Glasgow, Scotland, UK, David Pegg, Griffith University, Brisbane, AUSTRALIA, Ottavia Jedrikiewicz, Rodney Loudon, University of Essex, England, UK
Prediction deals with future events. Retrodiction deals with past events. Bayes' theorem allows us to derive retrodictive quantum mechanics. This theory can be applied to diverse problems in quantum optics, information and communication.
 
 
QWC2 8:45 - 9:00
Quantum Noise Induced Macroscopic Revivals in Second Harmonic Generation, Nicolas Treps, Claude Fabre, Universite de P. et M. Curie, Paris Cedex, FRANCE, M Olsen, R Horowicz, Universidad de Sao Paulo, Sao Paulo, BRAZIL, L. I. Plimak, University of Auckland, Private Bay, NEW ZEALAND, R. Singh, Russian Academy of Sciences, Moscow, RUSSIA
In travelling-wave second harmonic generation, the full quantum equations predict, in contrast with the semiclassical equations, a quasi-periodic revival of the fundamental mode and a degradation of the squeezing at very long interaction lengths.
 
 
QWC3 9:00 - 9:15
Coherent Phenomena in Two Band Photonic Crystals, D. G. Angelakis, UK, E Paspalakis, P. L. Knight, Imperial College, London, UK
We study the absorption and dispersion properties of a L-type atom embedded in a two band isotropic photonic crystal. We show that transparency phenomena are possible even in the absence of a second coupling laser field.
 
QWC4 9:15 - 9:30
Control of Light Output From Planar Optical Devices Using Wavelength-Scale Microstructure, Ifor Samuel, B. J. Matterson, J. M. Lupton, G. A. Turnbull, University of Durham, Durham, UK, M. J. Jory, W. L. Barnes, University of Exeter, Exeter, Devon, UK
Wavelength-scale microstructure is shown to enhance the external efficiency of a polymer light-emitting diode. The microstructure allows control of the spectrum, polarisation and direction of the emitted light.
 
 
QWC5 9:30 - 9:45
Radiative Coupling of Spherical Micro Dye Lasers, M. Borchers, Ruhr University, Bochum, GERMANY, C. Esen, Ruhr University, Bochum, GERMANY, G. Schweiger, Ruhr University, Bochum, GERMANY
Frequency down conversion is shown by radiative coupling of two spherical micro dye lasers. To our knowledge we show for the first time the successful stimulation of cascade lasing by two dye doped resonators.
 
 
QWC6 9:45 - 10:00
Multi-Atom Photon Blockade, A. D. Greentree, The Open University, Milton Keynes, UK, J. Vaccaro, The University of Hertfordshire, Hatfield, UK, Sebastián De Echaniz, A. V. Durrant, The Open University, Milton Keynes, UK, J. P. Marangos, Imperial College Science Tech & Medicine, London, UK
We show that photon blockade is possible in systems with a few atoms and highlight the differences between single and multi-atoms cases. Realistic experimental conditions will be discussed and potential applications investigated.
 
 
QWC7 10:00 - 10:15
Freezing Light: Ultraslow EIT Polariton in a Three-Level Medium, Olga Kocharovskaya, Texas A&M University, College Station, TX, USA and Russian Academy of Sciences, Nizhny Novgorod, RUSSIA, Yuri Rostovtsev, Marlan Scully, Texas A&M University, College Station, TX, USA
We prove that it is possible to freeze the laser pulse (i.e., to bring it to a full stop) or even reverse its direction of propagation in a coherently driven three-level atomic medium. The effect is based on the spatial dispersion of the refraction index n(w,k).
 
 
QWC8 10:15 - 10:30
A Coherence Length for Matter Waves, Sonja Franke-Arnold, Stephen Barnett, University of Strathclyde, Glasgow, Scotland, UK, Guillaume Huyet, University College, Cork, IRELAND
We introduce the concept and mathematical description of a coherence length and a coherence momentum for matter states, in particular the motional states of a single cold trapped ion.
 
 
16:00 - 18:00
Session: Quantum Effects II
Presider: E. Riis, University of Strathclyde, UK
 
 
QWG1 16:00 - 16:30 (Invited)
Single Photon Emission from Colored Centers in Diamond, Jean-Philippe Poizat, R. Tualle-Brouri, CNRS Laboratoire PHASE, A. Beveratos, CNRS Laboratoire PHASE, Philippe Grangier, Lab Charles Fabry de l'Institut d'Optique, Orday , FRANCE
We have observed photon antibunching from single NV colored centers in diamond at room temperature. Our latest results towards the realization of a triggerable source of single photon will be presented.
 
 
QWG2 16:30 - 16:45
Investigation of Dye Molecules for Single-Photon Generation, Per Jonsson, Royal Institute of Technology, Kista, SWEDEN, John Rarity, Defense Evaluation & Research Agency, Malvern, Worcestershire, UK, S. C. Kitson, Paul Tapster, DERA, Worcestershire, UK
We investigate the utility of microcavity single molecule sources for the generation of single photons. Key to realistic devices is the suppression of bleaching by singlet oxygen. We study the benefits of using triplet quenchers other than oxygen.
 
 
QWG3 16:45 - 17:00
A Robust All-Solid Source for Single Photons, Patrick Zarda, Sonja Mayer, Christian Kurtsiefer, Harald Weinfurter, University of Munich, Muenchen, GERMANY
We present a new stable source for single photons at room temperture: The fluorescence from single nitrogen-vacancy centers in type-Ib-diamond is well- suited for applications like quantum cryptography.
 
 
QWG4 17:00 - 17:15
Free-Space Quantum Cryptography and Satellite Key Uploading, John Rarity, Phillip Gorman, Thomas Wall, Paul Tapster, Defense Evaluation & Research Agency, Malvern, Worchester, UK
We report a polarisation-coded free-space quantum crytography experiment where keys were exchanged over 1.2km. The system also incorporates full key sifting and error correction. Extension to satellite key uploading will be discussed.
 
 
QWG5 17:15 - 17:30
Security Aspects of Practical Quantum Crytography, Barry Sanders, Macquarie University, Sydney, NSW, AUSTRALIA, Gilles Brassard, Universite de Montreal, Montreal, QC, CANADA, Norbert Luetkenhaus, Helsinki Institute of Physics, Helsingin yliopisto, FINLAND, Tal Mor, College of Judea & Samaria, Ariel, ISRAEL
We provide a thorough investigation of security issues for practical quantum key distribution, taking into account channel loses, a realistic detection process and modification of the ''qubits sent from the sender to the receiver.
 
 
QWG6 17:30 - 17:45
Interference Between Non-Overlapping Wave-Packets of a Single Photon, Nicklas Ohlsson, R. Krishna Mohan, Stefan Kroell, Lund Institute of Technology, Lund, SWEDEN
An experiment concerning interference between wave-packets from a split single photon is presented. This raises questions like: What is the significance of wave-packet coherence lengths in interference experiments? What nonlinear processes can be performed using single photons.
 
 
QWG7 17:45 - 18:00
Studies of Quantum Jumps in a Single 25Mg+ Ion Held in a Penning Trap, H. Powell, W. Irvine, M. A. Van Eijkelenborg, UK, D. M. Segal, R. C. Thompson, Imperial College Science Tech & Medicine, London, UK
Due to hyperfine effects the quantum jump 'bright' to 'dark' period ration is found to be different for the odd isotope 25Mg+ (c.f. 24Mg+) in agreement with theoretical predictions. The possibliltiy of detecting 'nuclear' quantum jumps is explored.
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