.
 

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

.
 . CLEO/Europe-IQEC 2000
Foreword
Sessions-at-a-Glance
Committee Lists
General Information
Exhibition Information
Technical Programme
Registration Forms
Postdeadline Papers
Download CLEO/Europe Categorization Form
Download IQEC Categorization Form
Home

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 2
 
 
 
08:30 - 10:00
Session: Nonlinear Effects in Novel Systems II
Presider: Gaetano Assanto, Terza University of Rome, ITALY
 
 
CFA1 8:30 - 8:45
Comparison of 2nd Harmonic Generation in 1 and 2D Nonlinear Periodic Crystals, Neil Broderick, T.M. Monro, Graeme Ross, D.J. Richardson, D.C. Hanna, Peter Smith, University of Southampton, Highfield, Southhampton, UK
Using high powered nanosecond pulses we examine the wavelength and temperature dependence of 2nd harmonic generation in 2D hexagonally poled lithium niobate. These results are compared with both standard PPLN and the results from high power picosecond experiments.
 
 
CFA2 8:45 - 9:00
Characterization of AlGaAs Waveguides for Three-Wave Mixing, G. Leo, C. Caldarella, Gaetano Assanto, Terza University of Rome, Rome, ITALY, O. Durand, Thomson CSF LCR, Orsay, FRANCE, A. De Rossi, Terza University of Rome, Rome, ITALY, M. Calligaro, X. Marcadet, Vincent Berger, Thomson CSF LCR, Orsay, FRANCE
We report on the characterization of GaAs/ AlGaAs waveguides for integrated optical parametric generators. Strict tolerances are met by the accurate determination of physical and optical parameters, both refractive and absorptive.
 
CFA3 9:00 - 9:15
A Spectral Characterisation Method for X(2) Gratings, Petar Vidakovic, Christian Simonneau, Ariel Levenson, CNRS/CNET, Bagneux, FRANCE, G. Bonfrate, V. Pruneri, P. Kazansky, University of Southampton, Southampton, UK
A simple technique to characterise quasi-phase-matching grating is proposed and experimentally demonstrate in periodically poled silica fibers. It is based on the analysis of the spectra characteristics of the second-harmonic beam generated in a short pulsed regime.
 
 
CFA4 9:15 - 9:30
Quadratic Cascading in Counterpropagating Parametric Amplifiers, K. Gallo, P. Baldi, Marc de Micheli, Daniel Ostrowsky, University of Nice-Sophia-Antipolis, Nice, FRANCE, Gaetano Assanto, Terza University, Rome, ITALY
We analyse the response of a counterpropagating parametric amplifier in the 'cascading' regime. The system exhibits bistability and enhanced signal phase-shifting with amplification, appealing for all-optical processing of low power signals.
 
CFA5 9:30 - 9:45
AlGaAs QPM Waveguides Fabricated by GaAs/Ge/GaAs (100) Sublattice Reversal Epitaxy, Shinji Koh, Takashi Kondo, Yasuhiro Shiraki, University of Tokyo, Tokyo, JAPAN, Ryoichi Ito, Meiji University, Kawasaki, JAPAN
Periodically domain-inverted ALGaAs QPM waveguides have been fabricated by sublattice reversal epitaxy. A preliminary SHG experiment has exhibited quasi-phase-matached output.
 
 
CFA6 9:45 - 10:00
Normal Incidence (001) Second-Harmonic Generation in Ordered Ga0.5In0.5P, S. Sauvage, I. Sagnes, CNRS/CNET, Bagneux, FRANCE, G. Le Roux, OPTO+ Groupment d'Interet Economique, Bagneux, FRANCE, M. Bensoussan, Ariel Levenson, CNRS/CNET, Bagneux , FRANCE
Despite their strong non-linear susceptibility usual III-V semiconductors do not show any second-harmonic generation (SHG) along (001). We demonstrate that ordered GaInP, without domain mixture, does not exhibit a non-vanishing second-order coefficient along this direction.
 
 
 
10:30 - 13:00
Session: Photorefractive Effects
Presider: Paul Michael Petersen, Riscoe National Laboratory, DENMARK
 
 
CFF1 10:30 - 10:45
Electrical Fixing of Waveguide Channels Using Dynamic Self-Focusing in Strontium-Barium Niobate Crystals, Detlef Kip, Christina Herden, Monika Wesner, Universitaet Osnabrueck, Osnabrueck, GERMANY
We demonstrate electrical fixing of waveguide channels in strontium-barium niobate crystals. Fixing is achieved by the dynamic interaction of a diffracting light beam with reversed ferroelectric domains in the beam's outer limits. This leads to self-focusing and a fised waveguide channel.
 
 
CFF2 10:45 - 11:00
Development of Thermally Fixed Holograms in Photorefractive Lithium-Niobate Crystals Without Light, Karsten Buse, I. Nee, M. Mueller, Eckhard Kraetzig, Universitaet Osnabrueck, Osnabrueck, GERMANY
A spatially modulated dark conductivity is present after thermal fixing of holograms since strong compensating electronic and ionic concentration patterns are formed. Modulated dark-diffusion as well as dark-drift currents arise and develop the hologram permanently.
 
 
CFF3 11:00 - 11:15
Spatial Rectification of Electric Field of Space Charge Waves in Sillenites, M.P. Petrov, A.P. Paugurt, V.V. Bryksin, Russian Academy of Sciences, St. Petersburg, RUSSIA, S. Wevering, E. Kratzig, Universitaet Osnabrueck, Osnabrueck, GERMANY
An oscillating but homogeneous space charge field was detected in photorefractive crystals illuminated by an oscillating pattern. A theory involving excitation of space charge waves and rectification of their fields consistent with experiment was suggested.
 
 
CFF4 11:15 - 11:30
Photorefractive Wave Mixing at 854 nm in a Rhodium Doped BaTiO3 Planar Waveguide Implanted with He+, Pierre Mathey, Alexandre Dazzi, Pierre Jullien, Universite de Bourgogne, Dijon, FRANCE, Daniel Rytz, Forschungsinstitut Idar-Oberstein, Idar-Oberstein, GERMANY, Paul Moretti, Universite Lyon 1, Villeurbanne, FRANCE
For the first time, a planar waveguide is elaborated with a monocrystalline BaTiO3:Rh substrate. The photorefractive effect in the guide is demonstrated via two wave mixing between two extraordinarily polarised guided TE0 modes.
 
CFF5 11:30 - 11:45
Adaptive Waveguide Interconnects and Waveguide Array Using Photorefractive Screening Solitons, Juergen Petter, Cornelia Denz, Darmstadt University of Technology, Darmstad, GERMANY
We report on the realization of an adaptive 2-to-1 waveguide coupler using (2D+1) photorefractive screeening solitons. Morever to the best of our knowledge the guidance of an array of photorefractive solitons is presented for the first time.
 
 
CFF6 11:45 - 12:00
Infrared Photorefractive Effects in Ion-Implanted SBN Waveguides, Monika Wesner, Detlef Kip, Universitaet Osnabrueck, Osnabrueck, GERMANY, Paul Moretti, Universite Lyon , Villeurbanne, FRANCE
We investigate the photorefractive response of strontium-barium niobate He+-implanted waveguides in the near infrared up to telecommunications wavelengths. Two-beam coupling as well as self-focusing and soliton formation are demonstrated.
 
CFF7 12:00 - 12:30 (Invited)
Infrared Recording in Photorefractive Crystals via Two-step Processes, Eckhard Kraetzig, Universitaet Osnabrueck, Osnabrueck, GERMANY
Photorefractive crystals can be sensitized for hologram recording with IR light by populating shallow levels forming states with relatively long life times. Results for LiNbO3 and LiTaO3, perovskites, sillenites and tungsten-bronze-type crystals are discussed.
 
 
CFF8 12:30 - 12:45
Hole Transport is Through Dye in a PVK-Matrix Photorefractive Polymer, Dave West, M.D. Rahn, K. Khand, D.J. Binks, University of Manchester, Manchester, UK, C. Im, Philipps University, Marburg, GERMANY, H. Baessler, University of Marburg, Marburg, GERMANY
Time of flight measurements in high dye content photorefractive polymer composites with either poly(N-vinylcarbazole) or polycarbonate hosts yield equivalent hole mobility. This provides powerful evidence of charge transport occuring through the chromphore molecules.
 
 
CFF9 12:45 - 13:00
Nonvolatile Holographic Storage in Lithium Tantalate with a Two-Step Process Using Continuous-Wave Laser Light, J. Imbrock, Detlef Kip, Eckhard Kraetzig, Universitaet Osnabrueck, Osnabrueck, GERMANY
Persistent holograms are recorded in congruent LiTaO3LFe crystals with red light of a diode laser while blue light sensitized the crystals. Nondestructive readout with red light is possible, and the holograms remain erasable for blue light.
 
 
 
ROOM 3
 
 
08:30 - 10:00
Session: Novel Materials for Molecular Photonics
Presider: Uli Lemmer, University of Munich, GERMANY
 
 
CFB1 8:30 - 9:00 (Invited)
Optical Data Storage in Liquid-Crystalline Azobenzene Side-Chain Polymers, Thomas Pedersen, Aalborg University, Aalborg Ost, DENMARK, Per Johansen, Risoe National Laboratory, Roskilde, DENMARK
Recent experimental and theoretical results of importance to optical storage in liquid-crystalline azobenzene polymers are discussed. A mean-field theory which is capable of explaining the temporal and intensity dependence of the storage process is presented.
 
 
CFB2 9:00 - 9:15
Time Resolved Photoluminescence of Electroluminescent Polymer Blends and Organic Microstructures, M. Rahn, J. Hill, A. Buckley, J. Cabanillas, A. Mark Fox, D.G. Lidzey, T. Virgili, Donal Bradley, University of Sheffield, S. Yorkshire, UK, D. Bowley, DRS Hadland Ltd., Hertfordshire, UK
Spectrally and temporally resolved photoluminescence of organic polymer blends and microcavity structures are of key impotance to their optimisation and consequent device improvements. Forster energy tranfer in a polymer blend occurs over approximately 30 ps.
 
 
CFB3 9:15 - 9:30
Single-Mode Random Laser in Weakly Scattering Dendrimer Waveguides, Akira Otomo, Shiyoshi Yokoyama, Sonoko Otomo, Tatsuo Nakahama, Shinro Mashiko, Communications Research Lab, Nishi-ku, Kobe, JAPAN
We have demonstrated a multiple scattering laser with long gain length in dendrimer doped polymer waveguides. The emission can be asingle line spectrum and the linewidth is less than 0.7nm without resonator mirrors.
 
 
CFB4 9:30 - 9:45
Transmission Switching and Hysteresis in an Ultrathin Film of Organic Molecular Aggregates, K.-H. Feller, Fachhochschule Jena, Jena, GERMANY, H. Glaeske, University of Applied Sciences, Jena, Jena, GERMANY, V.A. Malyshev, All-Russian Research Center, St Petersburg, RUSSIA
In this paper a novel mechanism of bisabliltiy- based optical switching in macromolecular organic aggregate layers is discussed. Realizability is analysed on the basis of the data of concrete materials.
 
CFB5 9:45 - 10:00
Effect of Intermolecular Interactions on Charge Transport and Light-Emission in Organic Light Emitting Diodes, J. M.Lupton, Ifor Samuel, University of Durham, Durham, UK, R. Beavington, P.L. Burn, University of Oxford, Oxford, UK, H. Baessler, University of Marburg, UK
We investigate the effect of intermolecular interactions in organic semiconductors for light emitting diodes using a family of starburst dendritic molecules. Dendron branching controls the emission spectrum, the device properties and the charge carrier mobility.
 
 
10:30 - 13:00
Session: Erbium-Doped Guided Wave Devices
Presider: Martin Kristensen, Technical University of Denmark, DENMARK
 
 
CFG1 10:30 - 11:00 (Invited)
Erbium-Doped Lithium Niobate Waveguide Lasers, Wolfgang Sohler, Universitaet Paderborn, Paderborn, GERMANY
The development of Ti:Er:LiNbO3 waveguide lasers is reviewed with emphasis on the latest results. In particular, harmonically mode-locked, Q-switched, distributed Bragg reflector, and self-frequency doubling lasers are discussed in detail.
 
 
CFG2 11:00 - 11:15
1.55 µm DFB Laser Integrated on Erbium Doped Phosphate Glass Substrate, S. Blaize, LEMO-ENSERG, Grenoble, FRANCE, J.E. Broquin, Inst National Polytechnique de Grenoble, Grenoble, FRANCE, D. Barbier, C. Cassagnetes, Teem-Photonics, Meylan, FRANCE
We have realised a 1cm long DFB lasers, on an Er/Yb co-doped phoshate glass substrate, with our ion-exchange technology, combined with our Bragg grating etching process. The laser operates at 1534 nm with an output power of 0.8 mW, and a narrow bandwidth of less than 130 MHz.
 
 
CFG3 11:15 - 11:30
High-Power (+24 dBm) Double-Clad Erbium-Doped Fibre Amplifier for WDM Applications in the C-Band (1528 nm-1562 nm), Florence Leplingard, P. Bousselet, M. Bettiati, OPTO+, L. Gasca, L. Lorcy, A. Tardy, , D. Bayart, Alcatel Corporate Research Center, Marcoussis, FRANCE
Owing to the use of an ytterbium-free erbium-doped fibre, a cladding-pumped amplifier compatible with wavelength-division-multiplexed applications in the C-band (1528nmto 1562 nm) is shown with a +24 dBm output power.
 
 
CFG4 11:30 - 11:45
Non-Destructive Measurements of the Distributed Gain in Erbium Doped Fibers with Improved Accuracy Using an Optical Frequency Domain Reflectometer, Mark Wegmuller, P. Oberson, O. Guinnard, B. Huttner, L. Guinnard, Nicolas Gisin, Universite de Geneve, Geneva 4, SWITZERLAND
Using an improved Optical Frequency Domian Reflectometer, the distributed gain in Erbium doped fibers is routinely obtained in a non-destructive and rapid way. The results are found to be in excellent agreement with traditional cut-back measurements.
 
 
CFG5 11:45 - 12:00
40 GHz Pulse Train Generation at 1.5µm by Pulse Multiplication Based on the Temporal Talbot Effect in a Chirped Bragg Grating, Stefano Longhi, M. Marano, Paolo Laporta, Orazio Svelto, Politecnico di Milano, Milano, ITALY, B. Agogliati,, V. Gusmeroli, D. Scarano, Pirelli Cavi & Sistemi S.p.A., Milano, ITALY, V. Pruneri, University of Southampton, UK, M.N. Zervas, Pirelli Cavi & Sistemi S.p.A., Milano, ITALY, M. Ibsen, University of Southampton, Southampton, UK
Pulse train multiplication based on the temporal Talbot effect in a linearly-chirped fiber grating is demonstrated. A 40-GHz converted optical pulse train is obtained from a 2.5-GHz FM mode-locked Er-Yb laser at 1.5µm.
 
 
CFG6 12:00 - 12:15
A Study of the Parameters of the Pulse Train Generated by an Actively Mode-Locked Er-doped Fiber Laser in the Rational-Harmonic Repetition-Rate-Doubling Regime, Roman Kiyan, Faculte Polytechnique De Mons, Mons,
BELGIUM, Olivier Deparis, ARO, Advanced Research in Optics, Mons, BELGIUM, Olivier Pottiez, Faculte Polytechnique De Mons, Mons, BELGIUM, Patrice Megret, M. Blondel,ARO, Advanced Research in Optics, Mons, BELGIUM
We demonstrate that pulse-to-pulse amplitude fluctuations occuring in the rational harmonic repetition-rate-doubling regime of actively mode-locked fiber laser are eliminated when modulation frequency is properly tuned. Irregularity of the pulse position in the
train is found to be the only drawback of this technique.
 
 
CFG7 12:15 - 12:30
Amplitude Stable Spectrum-Sliced Supercontinuum Sources For DWDM Applications, Stefano Taccheo, Politecnico di Milano, Milano, ITALY, L. Boivin, M. Yan, P. Wisk, W. Reed, J Gripp, J. Cloonan, Lucent Technologies, Crawford Hill, NJ, USA
We show theoretically and experimentally that supercontinumm generation in the normal dispersion regime maintains the amplitude-stability of the seed-pulse train. We demonstrate a low amplitude noise 50 GHz spaced 10-Gb/s 40 -channel supercontinumm
 
 
CFG8 12:30 - 12:45
Asynchronous Pulse Repetition Rate Control in Subpicosecond Erbium-Doped Frequency-Shifted Feedback Fibre Lasers, Joao Sousa, L.A. Gomes, O.G. Okhotnikov, INESC Porto, Porto, PORTUGAL
We demonstrate the modified concept of asynchronous pulse timing control in frequency-shifted-feedback fiber lasers. The generationsof 620 femtosecond pulses (full width at half maximum) is reported for a FSF Er-doped fibre laser.
 
 
CFG9 12:45 - 13:00
Dynamics of Pulse SBS/Er Fiber Laser with 30-80 mW Pump", Andrei Fotiadi, Russian Academy of Sciences, St. Petersburg, RUSSIA, Olivier Deparis, ARO, Advanced Research in Optics, Mons, BELGIUM, Roman Kiyan, Faculte Polytechnique De Mons, Mons, BELGIUM, Aris Ikiades, FO.R.T.H. - I.E.S.L., Heraklion, GREECE
We investigate self-starting quasi-periodic pulsation in Er-doped fiber laser at 30-80 mW pump power. The direct comparison of experimental oscilloscope traces with theoretically predicated ones proved that pulsation was caused by cooperative dynamics of linear Rayleigh backscattering (RS) and Stimulated Brillouin Scattering (SBS) in fiber configuration.
 
 
ROOM 4
 
08:30 - 10:00
Session: Unusual Beams and Resonators
Presider: Sergei Dimakov, Institute for Laser Physics, RUSSIA
 
CFC1 8:30 - 8:45
Non-Diffractive Laser Resonators, Jesus Rogel-Salazar, G. H. C. New, Imperial College, London, UK, S. Chavez-Cerda, INAOE, Puebla, Puebla, MEXICO
We present a computational model of a resonator formed by a conical and a plane mirror which offers a simple route to a Bessel beam laser. The corresponding strip resonator supports non-diffracting cosine modes.
 
 
CFC2 8:45 - 9:00
Unstable Laser Resonators with Helical Mirrors, Vladimir Sherstobitov, A. Yu. Rodionov, Institute for Laser Physics, St. Petersburg, RUSSIA
The computer simulation of a large-aperture laser with an unstable resonator comprising a helical mirror is carried out. It is shown that such a laser can oscillate with a high efficiency at the fundamental mode with axially symmetric intensity distibution and nonzero topological charge.
 
 
CFC3 9:00 - 9:30 (Invited)
Laser Beams with Wavefront Singularities, Marat Soskin, M.V. Vasnetsov, National Academy of Sciences, Kiev-22, UKRAINE
Abstract not available.
 
 
CFC4 9:30 - 9:45
Regimes of Amplification of a Laser Detector, R. Gabet, G. M. Stephan, Pascal Besnard, ENSSAT, Lannion, FRANCE
When a laser is injected by another laser with the same frequency and a smaller linewidth, we have shown that optical powers as low as -117 dBm (in the order of femtowatt) or less than half a photon per correlation time can be detected. We describe here the different regimes of amplification of a laser detector both experimentally and theoretically using a tranfer function for the laser in the frequency domain.
CFC5 9:45 - 10:00
On Some Signatures of the RF Excited Slab-Waveguide CO2 Lasers with Unstable Resonators, Edward Plinski, J.S. Witkowski, K.M. Abramski, Wroclaw University of Technology, Wroclaw, POLAND
It was found that the longitudinal tuning of the CO2 laser could give a well-ordered laser signature. The considered phenomenon was observed and investigated in an RF excited slabwaveguide CO2 laser equipped with a confocal unstble resonator in a few configurations.
 
 
10:30 - 13:00
Session: Solid-State Laser Materials
Presider: Klaus Petermann, Universitaet Hamburg, GERMANY
 
 
CFH1 10:30 - 10:45
Characterization and Laser Performance of a New Material: 2 at% Neodymium Doped YAG, Gunter Bitz, Volker Wesemann, J. L'huillier, A. Borsutzky, Richard Wallenstein, Universitaet Kaiserslautern, Kaiserslautern, GERMANY
We report on 2 at% doped Nd:YAG. The laser performance of this material will be compared with 1 at% doped Nd:YAG and Nd: YVO4 crystals.
 
 
CFH2 10:45 - 11:00
Inhomogeneous Broadening Effects in Optical Spectra Nd3+ in CNGG and CLNGG, A. Lupei, V. Lupei, L. Rogobete, E. Osiac, L. Gheorghe, A. Petraru, Institute of Atomic Physics, Bucharest, ROMANIA
A model of main five non-equivalent Nd3+ centers leading to Nd3+ multisites in CNGG and CLNGG disordered crystals in terms of occupation of near cationic sites is proposed. The energy transfer characteristics involving at least two types of interactions are also presented.
 
CFH3 11:00 - 11:30 (Invited)
New Solid-State Lasers Based on Rare-Earth Doped Sesquioxide Crystals, Guenter Huber, Volker Peters, Klaus Petermann, Universitaet Hamburg, Hamburg, GERMANY
Crystals of rare earth doped sesquioxides (RE2O3; RE=Sc, Y, Lu) have been grown from rhenium crucibles. Spectroscopic studies and first laser experiments of several rare-earth doped sesquioxides will be presented.
 
CFH4 11:30 - 11:45
Spatially Two-Dimensional Resolved Characterization of Nd:YAG Boule Slices, Volker Wesemann, Gunter Bitz, J. L'huillier, A. Borsutzky, Richard Wallenstein, Universitaet Kaiserslautern, Kaiserslautern, GERMANY
Nd:YAG boule slices have been characterised with respect to optical properties (homogeneity, birefringence, doping concentration) and laser performance (threshold, slope efficiency). The results clearly indicate a correlation between the optical properties and the laser performance.
 
 
CFH5 11:45 - 12:00
Identification of Electronic Stark Levels in Yb3+-Doped Sesquioxides by Pair Spectroscopy, Volker Peters, E. Mix, Klaus Petermann, Guenter Huber, Universitaet Hamburg, Hamburg, GERMANY, M.A. Noginov, Norfolk State University, Norfolk, VA, USA
Cystals of Yb3+ - doped RE2O3 (RE=Sc,Y,Yb,Lu) have been grown from rhenium crucibles. Studies of Yb single ion and pair transition have been carried out ot clearly identify the electonic 4f levels of the systems.
 
 
CFH6 12:00 - 12:15
(Yb3+, Dy3+) Codoped Halide Crystals for Mid-Infrared Lasers, P.Y. Tigreat, J.L. Doualan, Richard Moncorge, Universite de Caen, Caen, FRANCE, B. Ferrand, CEA Grenoble/LETI, Grenoble, FRANCE
Low energy phonon and non-hygroscopic CsCdBr3 and KPb2Cl5 crytals codoped with Yb3+ and Dy3+ ions have been grown and studied spectroscopically for their mid-infrared laser potentials under diode laser pumping.
 
 
CFH7 12:15 - 12:30
Preparation and Spectroscopy of Yb2+ Doped Fluorides, M. Henke, K. Rademaker, S. Kueck, Universitaet Hamburg, Hamburg, GERMANY
Preparational aspects of Yb2+ doped fluorides are presented and spectroscopic properties with respect to the realisation of a tunable solid state laser in the short wavelength range are reported.
 
 
CFH8 12:30 - 12:45
Search and Characterization of New Crystals for Raman Lasers, Tasoltan Basiev, Petr Zverev, A.A. Sobol, V.V. Osiko, General Physics Institute, Moscow, RUSSIA
Comparison of integral and peak Raman scattering cross sections of various crystals allowed to predict and to develop new highly efficient materials for stimulated Raman scattering among oxide crystals. Results on SRS conversion of nano and picosecond laser pluses in new tungstate and molybdate Raman crystals with high conversion efficiency are presented.
 
 
CFH9 12:45 - 13:00
Prospects for Superbroadband Laser Media Based on Beryllium Aluminate Crystals, E.V. Pestryakov, V.V. Petrov, V.I. Trunov, A.V. Kirpichnikov, A.I. Alimpiev, Russian Academy of Sciences, Novosibirsk, RUSSIA
This work substantiate perspective way for forming of anomalous wide gainband in solid state lasers by used of beryllium containing aluminate crystals- BeAl2O4, BeAl6O10, Be3Al2Si6O18 and BeLaAl11O19 doped with Jahn-Teller ions.
 
 
ROOM 5
 
08:30 - 10:00
Session: Laser Thin Film Deposition
Presider: Eric Fogarassy, CNRS Laboratoire PHASE, FRANCE
 
 
CFD1 8:30 - 8:45
Hybrid PLD Technique for Nitrogen Rich CNx Layers, Miroslav Jelinek, Jan Lancok, J. Bulir, D. Chvostova, M. Simeckova, Czech Academy of Sciences, Prague 8, CZECH REPUBLIC, V. Penna, A. Mackova, Nuclear Physics Institute, Prague, CZECH REPUBLIC
Hybrid pulsed laser deposition technique, combining PLD with radiofrequency and hollow cathode discharges, was developed to sharply increase nitrogen concentration in CNx films. Results of optical and mechanical characterization of nitrogen rich films are discussed.
 
CFD2 8:45 - 9:00
Expolsive Ion Emission from Sapphire Upon Femtosecond Excitation, Juergen Reif, Matthias Henyk, Dirk Wolfframm, Universitaet Cottbus, Cottbus, GERMANY
Explosive positive-ion emission (kinetic energy around 100eV) is observed from sapphire crystal, irradiated by 120-fs pulses. Negative ions appear considerably later and are much slower. All ablation is preceded by effective electron emission.
 
CFD3 9:00 - 9:15
Carbon Dioxide Laser and Diode Laser Dispersing of TiC-Powder into Aluminium Substrates, Gerhard Liedl, Ch. Zeinar, M. Resch, M. Boegl, Vienna University of Technology, Wien, AUSTRIA
The narrow melt pool caused by a segmented mirror produces an inhomogeneous powder distribution within the substrate. Although the diode laser delivers less beam power it can be used for melting of the aluminium substrate.
CFD4 9:15 - 9:30
The Laser Ion Implantation Facility (LIIF): Design & First Results, F. Boody, Ion Light Technologies GmbH, Bad Abbach, GERMANY, R. Kempf, R. Hoepfl, University of Applied Sciences, Deggendorf, GERMANY, H. Hora, University of New South Wales, Sydnesy, AUSTRALIA, L. Laska, L. Juha, K. Rohlena, J. Krasa, M. Pfeifer, Academy of Sciences, Prague, CZECH REPUBLIC, E. Woryna, J. Wolowski, Institute of Plasma Physics, Warsaw, POLAND, V. Pefiina, Academy of Sciences, Prague, CZECH
The laser Ion Implementation Facility has been designed to study the commercial feasibility of laser ion implementation using an industrial excimer laser. Design details and first results of characterizing the ion source and implanting ions will be presented.
 
 
CFD5 9:30 - 10:00 (Invited)
An Overview on Nitride Films Deposited by Reactive Pulsed Laser Ablation, Alessio Perrone, Universita di Lecce, ITALY
Pulsed laser ablation and reactive pulsed laser ablation appear to be the most natural and rapid way to deposit thin films. In this paper, we report the present status of our knowledgement on nitride thin films depositions by laser ablation of solid targets in nitrogen containing atmosphere.
 
 
10:30 - 13:00
Session: Femtosecond Laser Materials Processing
Presider: Wolfgang Kautek, Federal Institute for Material Research, Berlin, GERMANY
 
 
CFI1 10:30 - 10:45
Femtosecond-Pulse Laser Machining of Semiconducting Materials, J. Bonse, S. Baudach, J. Krueger, Federal Institute for Material Research, Berlin, GERMANY, M. Lenzner, Vienna University of Technology, Vienna, AUSTRIA, M.Wrobel, University of Missouri, Kansas City, MO, USA, W. Kautek, Federal Institute for Material Research, Berlin, GERMANY
Machining investigations of crystalline silicon and indium phosphide have been performed. The ablation threshold fluence is nearly constant for pulses with a duration between 5 fs and 400 fs for silicon. Special morphological features (e.g. ripples,cones) and chemical changes were observed.
 
CFI2 10:45 - 11:00
Femtosecond UV-Laser Processing of Sub-um Holes in Steel Foils, J. Bekesi, Peter Simon, J. Ihlemann, Laser-Laboratorium Goettingen, Goettingen, GERMANY
A UV-femtosecond laser is used for drilling 800nm holes in steel foils of 5µm thickness. Combining this process with conventional drilling, sub-µm holes in mm thick steel plates can be produced.
 
CFI3 11:00 - 11:15
Laser Ablation Thresholds of Pure Metals with Short Laser Pulses, M. Hashida, A. Semerok, O. Gobert, G. Petite, J.-F. Wagner, CEA Saclay, Gif sur Yvette , FRANCE
The laser ablation threshold for metallic elements (Cu, Al, Fe, Zn, Sn, Pb, Mo) have been investigated experimentally with 80fsec laser in the energy range of (1-600uJ), and its threshold dependence on the pulse duration in the range of 80 - 5000fs also demonstrated for Cu.
 
 
CFI4 11:15 - 11:30
Femtosecond Micro-Machining at Atmospheric Pressure Near Air-Ionization Threshold, Lawrence Shah, Martin Richardson, Jesse Tawney, Kathleen Richardson, University of Central Florida, Orlando, FL, USA
Recent experiments comparing the ablation characteristics of femtosecond and subnanosecond laser pulses in air are reported. These experiments indicate that precise femotosecond micromaching applications can be performed at atmospheric pressures.
 
CFI5 11:30 - 12:00 (Invited)
Theory for Ablation and Structural Changes Induced by Femtosecond Laser Pulses, Martin Garcia, Freie Universitaet Berlin, Berlin, GERMANY
We present a theoretical description of the interaction of carbon with ultrashort laser pulses. Bond-breaking mechanisms, nonequilibrium phase transitions and ablation are analyzed as a function of duration and intensity of the laser pulses.
 
 
CFI6 12:00 - 12:15
Ultrafast Change in Optical Properties of Gallium: The Evidence of a New Transient State of Matter, E.G. Gamaly, Andrei Rode, Australian National University, Canberra, AUSTRALIA
Ultra-fast change of reflectivity of gallium films, induced by fs laser pulses, gives evidence of a new transient state of matter, where electrons are already in a metalllic 'liquid' state, while the ions are still in the positions of the intial crystalline phase.
 
CFI7 12:15 - 12:30
Spatial Control of Second-Order Optical Susceptibility Induced in Thermally Poled Glasses, H. Guillet de Chatellus, S. Montant, Eric Freysz, Universite Bordeaux, Talence, FRANCE
We demonstrate that either one or two-photon absorption allow to tailor the spatial profile of second order susceptibility induced in a thermally poled fused silica and borophosphate glasses. A law describing the phenomena is proposed.
 
CFI8 12:30 - 13:00 (Invited)
Time-Resolved X-ray Scattering from Ultrashort Laser Illuminated Materials, Roger Falcone, University of California - Berkeley, Berkeley, CA, USA
Short-pulse laser illumination can induce rapid changes in the structure of a solid. High-speed x-ray scattering techniques can be used to study the resulting dynamics in such warmed materials on the picosecond timescale. I will discuss our new technologies and results of recent experiments.
 
 
ROOM 7
 
08:30 - 10:00
Session: Spatial and Temporal Solitons
Presider: John Dudley, University of Auckland, NEW ZEALAND
 
 
CFE1 8:30 - 9:00 (Invited)
Localisation Effects in Waveguide Arrays - from Bloch Oscillations to Discrete Solitons, Falk Lederer, Friedrich-Schiller-Universitaet - Jena, Jena, GERMANY
Intrinsic localisation of light in linear and quadratically nonlinear wave guide arrays will be studied. This localisation manifests itself in optical Bloch oscillations and in various types of discrete solitons. Potential applications will be discussed.
 
 
 
CFE2 9:00 - 9:15
Nonlinear Cross-Polarization Switching and Domain Wall Solitons with Counterpropagating Laser Beams in Optical Fibres, S. Pitois, Guy Millot, S. Wabnitz, Universite de Bourgogne, Dijon, FRANCE
We report experimental observations of polarization cross-switching and domain wall soliton generation with two counterpropagating laser beams in an isotropic optical fibre.
 
CFE3 9:15 - 9:30
The ASA Noise-Induced Soliton Phase Jitter, Marc Hanna, GTL-CNRS Telecom, Metz, FRANCE, Henri Porte, Universite de France Comte, Besancon, FRANCE
We investigate the feasibility of coherent optical communications using solitons. The phase stability versus amplified spontaneous noise (ASE) is assessed experimentally and compared with analytical and simulation results.
 
CFE4 9:30 - 9:45
Stable Periodic Arrays of Bright Kerr-Like Spatial Solitons in a Planar Waveguide, Cyril Cambournac, Herve Maillotte, E. Lantz, M. Chauvet, Universite de France Comte, Besancon cedex, FRANCE, John Dudley, University of Auckland, Auckland, NEW ZEALAND
Modulational instability is used to generate periodic arrays of bright spatial solitons in a planar CS2 waveguide. The finite molecular response time of the nonlinear index contributes to stabilizing the period and the propagation of the soliton array.
 
CFE5 9:45 - 10:00
Optical Power Limiting in Integrated Optics Using Nonlinear Segmented Waveguides, Pierre Aschieri, P. Baldi, Marc de Micheli, Daniel Ostrowsky, University of Nice-Sophia-Antipolis, Nice, FRANCE
We propose to use nonlinear segmented waveguides to achieve optical power limiting for integrated optical device. The analysis is based on the increase of losses with the power due to cascade second order nonlinear processes.
 
 
10:30 - 13:00
Session: Strong-Field Interactions and Metrology
Presider: Andre Mysyrowicz, Ecole Polytechnique, ENSTA, Palaisseau, FRANCE
 
QFE1 10:30 - 11:00 (Invited)
Using Femtosecond Technology to Control Molecular Dynamics in Strong Laser Fields, Misha Ivanov, National Research Council of Canada, Ottawa, ON, CANADA
Femtosecond pulses offer two approaches to quantum control based on using pulse shaping techniques and strong electric fields. Both are combined in strong-field molecular optics to induce and study molecular alignment and force controlled angular acceleration.
 
 
 
QFE2 11:00 - 11:15
Three - Dimenional Non-Adiabatic Model for High-Order Harmonic Generation with Few - Optical - Cycle Pulses, E. Priori, Giulio Cerullo, Mauro Nisoli, , S. Stagira, Sandro De Silvestri, CEQSE-CNR, Milano, ITALY, P. Villoresi, L. Poletto, P. Ceccherini, Universita di Padova, Padova, ITALY, C. Altucci, Universita della Basilicata, Potenza, ITALY, R. Bruzzese, C. de Lisio, Universita di Napoli Federico II, Napoli, ITALY
A numerical model of high-order harmonic generation including non-adiabatic atomic response and three dimensional propagation effects is presented. The results are in good agreement with the performed experiments both for 30-fs and 7-fs driver pulses.
 
 
QFE3 11:15 - 11:30
Stepwise Electron Emission From Autoionizing Magnesium Stark States, J. B. M. Warntjes, C Wesdorp, FOM Institute AMOLF, Amsterdam, THE NETHERLANDS, F Robicheaux, Auburn University, AL, USA, L D. Noordam, FOM Institute AMOLF, Amsterdam, THE NETHERLANDS
We investigated the time dependent electron emission of doubly excited magnesium atoms in a strong electric field. The autoionizing electron yield shows a stepwise decay on a picosecond timescale.
 
 
QFE4 11:30 - 11:45
Characterization and Optimization of Infrared Emisson From Light Filaments Observed in a fs-TW Laser Beam Progagating in the Atmosphere, Jin Yu, LASIM, Villeurbanne, FRANCE, M. Franco, Ecole Polytechnique - ENSTA, Palaiseau, FRANCE, J. Kasparian, Institut fuer Optik und Quanteneletronik, Jena, GERMANY, D. Mondelain, LASIM, Villeurbanne, FRANCE, Andre Mysyrowicz, Ecole Polytechnique - ENSTA, Palaiseau, FRANCE, S. Niedermeir, LASIM, Villeurbanne Cedex, FRANCE, B. Prade, Ecole Polytechnique - ENSTA, Palaiseau, FRANCE, M. Rodriquez, Freie Universitaet Berlin, Berlin, GERMANY, Roland Sauerbrey, Friedrich-Schiller-Universitaet - Jena, Jena, GERMANY, S. Tzortzakis, Ecole Polytechnique - ENSTA, Palaiseau , FRANCE, H. Wille, Freie Universitaet Berlin, Berlin, GERMANY, Jean-Pierre Wolf, Universite Lyon 1, Villeurbanne, FRANCE, L. Woeste, Freie Universitaet Berlin, Berlin, GERMANY
Infrared emission from light filaments observed in a fs-tW laser beam propagating in the atmosphere has been measured up to 4.5µm. Its intensity has been optimized by the variation of laser pulses characteristics and beam propagation geometry.
 
 
QFE5 11:45 - 12:00
High Power Optically Turbulent Femtosecond Light Strings, Jerome Moloney, M. Kolesik, University of Arizona, Tuscon, AZ, USA, M. Mlejnek, Corning Inc., Corning, NY, USA, Ewan Wright, University of Arizona, Tucson, AZ, USA
Supercomputing simulations of spontaneous creation of turbulent light intensity filements, plasma spikes and polarization domains within a wide intense pulse propagating through air will be discussed.
 
 
QFE6 12:00 - 12:15
Femtosecond Laser-guided Electric Discharge in Air, S. Tzortzakis,B. Prade, Y.-B. Andre, M. Franco, Andre Mysyrowicz, S. Huller, P. Mora, Ecole Polytechnique, Palaiseau Cedex, FRANCE
We study a new type of electric discharges triggered in air by intense femtosecond IR laser pulses. The discharge initation is attributed to Joule heating of the laser-generated plasma column of uniform density.
 
 
QFE7 12:15 - 12:30
Ultrafast Preparation and CARS Monitoring of Ground State Dynamics, Iddo Pinkas, G Knopp, Yehiam Prior, Weizmann Institute of Science, Rehovot, ISRAEL
We present a method for preparing wavepackets with arbitrary vibrational energy in the ground electronic state, and monitoring their dynamics by a built in CARS process.
 
QFE8 12:30 - 12:45
Kerr-Lens Mode-Locked Lasers as Ultra -Low Noise Microwave Sources, Joern Stenger, H. R. Telle, Physikalisch-Technische Bundesanstalt, Braunschweig, GERMANY, G. Steinmeyer, U. Keller, ETH Hoenggerberg, Zurich, SWITZERLAND
Kerr-lens mode-locked lasers are ideally suited for ultra-low-noise frequency conversion from the optical to the microwave region, which is demostrated by measurements of the pulse timing noise.
 
 
QFE9 12:45 - 13:00
Highly Stable Femtosecond Laser for Synthesis and Measurement of Optical Frequencies, Sergei Bagayev,, S. V. Chepurov, V.M. Klementyev, S. A. Kuznetsov,, V. S. Pivtsov, V.F. Zakharyash, Russian Academy of Sciences, Novosibirsk, RUSSIA
The creation of a highly stable femtosecond self-mode-locked Ti:S-laser using simultaneous stabilization of the frequency of intermode beats and optical frequency is reported. The frequency stability of intermode beats is 10-14 In 1000s. The results of using this laser for the synthesis and measurement of optical frequencies are presented. The principles of creation of a femtosecond optical clock are discussed.

 
 
ROOM 6
 
08:30 - 10:00
Session: Dynamics of Semiconductor Lasers
Presider: Maxi San Miguel, Universidad de las Islas Beleares, SPAIN
 
QFA1 8:30 - 8:45
Isolated Period 3 and 2 Coexisting Bifurcation Orbits in Diode Lasers Subject to Optical Injection: Experiments and Theory, Athanasios Gavrielides, Vassilios Kovanis, AFRL/DELO, Kirtland AFB, NM, USA, T. Erneux, Universite Libre de Bruxelles, Bruxelles, BELGIUM, Thomas Simpson, Jaycor Inc, San Diego, CA,
We discuss experimental observations of period two and a coexisting period three orbit in semiconductor lasers with optical injection. We analyze a phase equation that discribes the laser asymptotically and compare our results with computations.
 
QFA2 8:45 - 9:00
Bifurcation Connection Between External Cavity Mode in a Semiconductor Laser Exhibiting Low Frequency Fluctuations, D. Pieroux, T. Erneux, Universite Libre de Bruxelles, Bruxelles, BELGIUM, B. Haegeman, K. Luzyanina, K. Engelborghs, D. Roose, K.U. Leuven, Haverlee, BELGIUM, Athanasios Gavrielides, Vassilios Kovanis, AFRL/DELO, Kirtland AFB, NM, USA
We consider semiconductor lasers subject to optical feedback and modeled by Lang and Koayashi equations. Using a numerical continuation method, we show that branches of periodic solutions are connecting external cavity modes.
 
QFA3 9:00 - 9:15
Low Frequency Fluctuations in a Multimode Semiconductor Laser with Optical Feedback, Evgeny Viktorov, Institute for Laser Physics, St. Petersburg, RUSSIA, Paul Mandel, Universite Libre de Bruxelles, Bruxelles, BELGIUM
We study a semiconductor laser with optical feedback, and find that some experimental aspects of the dynamic associated with multimode low frequency fluctuations can be interpreted as resulting from symmetry which leads to a degenerate Hopf bifurcation.
 
QFA4 9:15 - 9:30
Switching Waves and Spatio-Temporal Dynamics in Bistable Microresonators, G. Slekys, Isabelle Ganne, CNET, Bagneux, FRANCE, I. Sagnes, Robert Kuszelewicz, CNRS/CNET, Bagneux FRANCE, A first experimental evidence of optical switching waves in bistable semiconductor microresonators with fast electronic nonlineary is presented. We discuss how their spatio-temporal dynamics influences the range of bistability.
 
 
QFA5 9:30 - 9:45
Noise Enhancement of Telegraph Signals in Vertical Cavity Surface Emitting Lasers, G. Giacomelli, S. Barbay, Instituto Nazionale di Ottica Applicata, Firenze, ITALY, Francesco Marin, Universita di Firenze, Firenze, ITALY
We present the experimental evidence of a noise-enhanced transmission of telegraph signals through a nonlinear optical system. The characterization of the phenomenon and the discussion of the results are reported.
 
 
QFA6 9:45 - 10:00
Coherence Resonance in an Optical System, M. Giudici, Instituto Mediterraneo de Estudios Avanzados, Palma de Mallorca, SPAIN, G. Giacomelli, Instituto Nazionale di Ottica Applicata, Firenze, ITALY, S. Balle, Instituto Mediterraneo de Estudios Avanzados, Palma de Mallorca, SPAIN, J.R. Tredicce, Institut Non Lineaire de Nice, Valbonne, FRANCE
Coherence Resonance in an optical system is experimentally demonstrated by analyzing the regularity of the pulses in the intenisty of a laser diode with optical feedback as a function of noise level.
 
 
 
10:30 - 13:00
Session: Progress in Coherent Light Sources
Presider: Robert C. Eckhardt, University of Arizona, AZ, USA
 
 
QFD1 10:30 - 11:00 (Invited)
Laser Frequency Conversion with Periodically Poled Materials, Lawrence Myers, Lightwave Electronics Corp, Mountain View, CA, USA
We will discuss our efforts to apply periodically poled materials in commercial laser devices, which have focused on an infrared single-frequency OPO source, based on PPLN, resonantly pumped at 1064 nm.
 
QFD2 11:00 - 11:30 (Invited)
Coherent Light Sources Based on Periodically Poled KTP and its Isomorphs, Fredrik Laurell, Royal Institute of Technology, Stockholm, SWEDEN
The recent development of periodically poled materials from the KTP family, and their use in highly efficient coherent devices in the UV, visible and near IR spectrum will be reviewed in this talk.
 
QFD3 11:30 - 11:45
A Novel Design for a SLM Optical Parametric Oscillator, Wim Hogervorst, Vrije Universiteit, Amsterdam, THE NETHERLANDS, Vitali Tugbaev, National Academy of Sciences of Belarus, Minsk, BELARUS
A novel design for a compact ring cavity with reduced losses is proposed for a single-longitudinal-mode Optical Parametric Oscillator in a grazing-incidence grating configuration.
 
QFD4 11:45 - 12:00
Tunable Visible Lasers Based on Efficient NCPM Frequency-Doubling of LiF:F2 in LBO, Shirin Giffin, University of Otago, Dunedin, NEW ZEALAND, Iain McKinnie, Coherent Technologies, Inc., Boulder, CO, USA, Glenn Baxter, University of Otago, Dunedin, NEW ZEALAND, Valerii Ter-Mikirtychev, Science & Engineering Services, Inc., Burtonville, MD, USA
We report non-critically phase-matched second harmonic generation of a nd: YAG- pumped LiF:F2 laser in lithium triborate. Optimization yields 42% LiF:F2 laser efficiency and 55% frequency-doubling efficiency, providing >20% conversion from 1064 nm to broadly tunable visible light.
 
QFD5 12:00 - 12:15
Stimulated Phonon-Sideband Emission From Laser-Diode-Pumped Microchip Nd Solid-State Lasers and Associated Low-Frequency Fluctuations, Kenju Otsuka, Ryoji Kawai, Kazuyoshi Ohki, Tokai University, Kanagawa, JAPAN, Siao-Lung Hwong, Jyh-Long Chern, Yu-Hsiang Huang, National Cheng-Kung University, Tainan, TAIWAN, R.O.C.
Intracavity stimulated Raman scattering has been observed in laser-diode-pumped microchip Nd solid-state lasers without the use of a Raman cell. Antiphase low-frequency fluctuations associated with Raman scattering in multimode regimes are reported.
 
 
QFD6 12:15 - 12:30
Simultaneous Dual Wavelength CPA Operation of the Vulcan Laser for Particle Acceleration Experiments, John Collier, D. Neely, Rutherford Appleton Laboratory, Didcot, Oxfordshire, UK, R. Allot, Central Laser Facility, OXON, UK, C.N. Danson, Rutherford Appleton Laboratory, Didcot,
Oxfordshire, UK, S. Hawkes, Central Laser Facility, OXON, UK, Z. Najmudin, RJ Kingham, K. Krushelnick, AE Dangor, Imperial College Science Tech & Medicine, London, UK
We present details of the short pulse configuration of a chirped pulse amplification laser to drive a plasma beat wave into saturation.
 
 
QFD7 12:30 - 12:45
High-Power, High Brightness Master Oscillator/Power Amplifier Copper Laser System Based on Kinetically Enhanced Elements, D.J.W. Brown, M. Withford, J. Piper, Macquarie University, North Ryde, AUSTRALIA
We report the performance characteristics of a copper laser master-oscillator/power-amplifier system incorporating kinetically enhanced elements. Output powers>200W and within 2.5x the diffraction limit were produced.
 
QFD8 12:45 - 13:00
Resonant Peak in Detuning Curve of Ionic Anti-Stokes Raman Laser, S. A. Babin, S. I. Kablukov, D. A. Khorev, Institute of Automation and Electrometry, Novosibirsk, RUSSIA
We report on realization of anti-Stokes Raman laser in ArII system with long lived start and final levels in a standing wave cavity. A sharp resonant peak of output power is discovered and explained quantitatively.
 
 
 
ROOM 8
 
 
08:30 - 10:00
Session: Novel Imaging Techniques
Presider: Rinaldo Cubeddu, Politecnico di Milano, ITALY
 
QFB1 8:30 - 9:00 (Invited)
Multi - Photon Excitation Fluorescence Lifetime Imaging, Kees de Grauw, Hans Gerritsen, Utrecht University, Utrecht, THE NETHERLANDS
Multi-photon excitation microscopy (MPEM) shows improved in-depth imaging properties compared with conventional confocal imaging. The combination of MPEM with fluorescence lifetime imaging facilitates quantitative imaging of ion-concentrations. Applications include pH imaging in thick dental biofilm.
 
 
QFB2 9:00 - 9:15
3D Images of the Retina of the Living Eye Generated Using Transversal OCT Images Acquired at Different Depths, Adrian Podoleanu, John Rogers, David Jackson, University of Kent at Canterbury, Canterbury, Kent, UK, Shane Dunne, Ophthalmic Technologies, Inc, Toronto, CANADA
3d animations and longitudinal images of the retina at any transversal position are visualised from sets of en-face OCT images collected at different depths.
 
QFB3 9:15 - 9:30
Third-Harmonic Microscopy in Biology, Dvir Yelin, Yaron Silberberg, Weizmann Institute of Science, Rehovot, ISRAEL
A laser scanning microscope using third-harmonic generation as a probe is shown to produce high-resolution images of tranparent biological specimens. Third harmonic microscopy offers 3-dimensional imaging with the large penetration depth of a variety of biological specimens without prior treatment.
 
 
QFB4 9:30 - 9:45
Optical Microscopy with a Single-Molecule Light Source, C. Hettich, J. Michaelis, J. Mlynek, Vahid Sandoghdar, Universitaet Konstanz, Konstanz, GERMANY
By combining the techniques of scanning probe microscopy and single molecule spectroscopy we have succeeded in recording the first optical images taken with a point-like source of light. We report on our recent experimental as well as theoretical results.
 
QFB5 9:45 - 10:00
Towards the Fluorescence Resonance Energy Transfer (FRET) Scanning Near-Field Optical Microscopy with Chemical Selectivity, S. K. Sekatskii, G. T. Shubeita, M Chergui, G. Dietler, Universite de Lausanne, Lausanne-Dorigny, SWITZERLAND, B. N. Mironov, A, D. A. Lapshin, V. S. Letokhov, Russian Academy of Sciences, Moscow Region, RUSSIA
Fluorescence Resonance Energy Transfer (FRET) process has been investigated between donor dye molecules deposited on the sample surface and acceptor dye molecules deposited onto the tips of Scanning Near-field and Atomic Force Microscopes.
 
10:30 - 13:00
Session: Spectroscopy and Sensing
Presider: Rinaldo Cubeddu, Politecnico di Milano, Milano, ITALY
 
 
QFF1 10:30 - 11:00 (Invited)
UV Laser Footprinting and DNA-Protein Crosslinking, Dimitar Angelov, Bulgarian Academy of Sciences, La Tronche, FRANCE, Stefan Dimitrov, Institute Albert Bonniot, La Tronche, FRANCE
UV Laser photofootprinting and protein-DNA crosslinking formation are direct and powerful approaches to study transient protein-DNA interactions involved in gene expression and regulation. The latter technique enables to localize DNA-protein contact points, while the former allows the visualization of the DNA structural deformations.
 
 
QFF2 11:00 - 11:15
Relaxation Process in Singlet O2 Analyzed by Laser-Induced Gratings, Walter Hubschmid, B. Hemmerling, Paul Scherrer Institut, Villigen PSI, SWITZERLAND
Thermal laser-induced gratings have been generated in oxygen after the excitation of the molecules to the singlet b1S+g(v'=0) state. We investigated theoretically and ecperimentally the subsequent rotational, vibrational, and electronic relaxation process by analyzing the temporal evolution of the grating.
 
QFF3 11:15 - 11:30
Magnetic Chiroptical Effects in Second Harmonic Reflection on an Isotropic Film of Chiral Molecules, M. Schanne-Klein, Francois Hache, Ecole Polytechnique, Palaiseau Cedex, FRANCE, T. Brotin, C. Andraud, Ecole Normale Superieure, Lyon Cedex 07, FRANCE
Surface second harmonic generation on a film of chiral molecules is an effiecient way to probe their optical activity. Nonvanishing circular dichroism along with no optical rotation of the second harmonic indicates strong magenetic contributions.
 
 
QFF4 11:30 - 11:45
Ultrafast Transient Optical Spectroscopy in Liquid Water, Guilhem Gallot, Laboratoire d'Optique, Palaiseau, FRANCE, N. Lascoux, G. Gale, Laboratoire d'Optique, Palaiseau, FRANCE, S. Bratos, J.C. Leicknam, Universite P. et M. Curie, Paris Cedex 05, FRANCE, F. Hache, Ecole, FRANCE
Ultrafast mid-infrared (3000-3600cm-1) variable-wavelength pump/probe transient absorption spectroscopy has been performed in liquid water. Non monotonic absorption transients are observed, showing competition between bleaching and induced absorption.
 
 
QFF5 11:45 - 12:00
Photodissociation Dynamics of Dihalomethanes in Solution Studied by Ultrafast Pump-probe Spectroscopy, Alexander Tarnovsky, Magnus Wall,, Marcus Rasmusson, Torbjorn Pascher, Villy Sundstrom, Eva Akesson, Lund University, Lund, SWEDEN
Photodissociation dynamics of chloroiodomethane and diiodomethane in acetonitrile are studied by femtosecond pump-probe spectroscopy. For both dihalomethanes, photodissociation is followed by recombination of the nascent fragments within the solvent cage into an isomer configuration.
 
QFF6 12:00 - 12:30 (Invited)
Fibre Bragg Gratings and Fibre Interferometers for Medical Applications, David Jackson, University of Kent at Canterbury, Canterbury, Kent, UK
Miniature optic probes based on fibre Bragg gratings or fibre interferometers can be configured for monitoring medical procedures. Probes have been demonstrated for temperature, pressure and ultrasound. These systems together with realised and potential applications will be discussed in this presentation.
 
 
QFF7 12:30 - 12:45
Time-and Space-Resolved Reflectance Spectroscopy Reconstructs the Absorption Spectra of Layered Diffusive Media, Rinaldo Cubeddu, Cosimo D'Andrea,, Antonio Pifferi, Paoloa Taroni, Alessandro Torricelli, Gianluca Valentini, Politecnico di Milano, Milano, ITALY
Absorption and scattering spectra of two-layer tissue phantom were assessed between 610 and 850 nm using time-and space-resolved reflectance. An algorithm for the reconstruction of the absorption spectra of the two layer was developed.
 
 
QFF8 12:45 - 13:00
Remote Monitoring of Mineral Spills Using LIDAR Techniques, V. Varlamov, Tallinn Pedagogical University, Estonia,
GERMANY, S. Patsayeva, Moscow State University, Moscow, RUSSIA
Spectral response of oil films excited by laser radiation at different wavelengths is described. The technique of film thickness estimation has been improved and experimentally tested.
 
ROOM 9
 
08:30 - 10:00
Session: Optical Confinement
Presider: Izo Abram, CNET, FRANCE
 
 
QFC1 8:30 - 8:45
New Non-linear Features in the Reflectivity and Emission of Microcavity Polaritons, Pascale Senellart, J. Bloch, J. Marzin, CNRS, Bagneux, FRANCE
We probe the change of microcavity polariton reflectivity induced by a non resonant pump. While superlinear photoluminescence occurs when increasing the pump power, a drastic deepening of the lower polariton reflectivity line is observed.
 
 
QFC2 8:45 - 9:00
Biexcitons or Bipolaritions in a Semiconductor Microcavity?, Paola Borri, Wolfgang Langbein, University of Dortmund, Dortmund, GERMANY, U. Woggon, Universitaet Dortmund, Dortmubd, GERMANY, J. Jensen, Jorn Hvam, Technical University of Denmark, Lyngby, DENMARK
A well-resolved nonlinear transition associated with biexcitons in a high-quality microcavity is measured in a pump-probe experiment. We find a biexciton energy not significantly affected by the coupling with the cavity photons.
 
 
QFC3 9:00 - 9:15
Short-Memory Correlation and Biexcitonic Effects in Strongly Coupled Exciton - Cavity System, Yu Svirko, Japan Science & Technology Corp, Takatsu-ku, Kanagawa, JAPAN, M. Kuwata-Gonokami, University of Tokyo, Tokyo, JAPAN
We discriminate excitonic memory effects in GaAs quantum well high-Q microcavity and show that the third-order nonlinear response is dominated by contribution from short-memory exciton correlation, while the biexction contribution does not exceed 30%.
 
QFC4 9:15 - 9:30
Variable Coherence in Determining the Scattering Parameters of Diffuse Media Using Laser Speckle, Kevin Webb, M. A. Webster, J. D. McKinney, Purdue University, West Lafayette, IN, USA, Andrew Weiner, Purdue University, Berlin, GERMANY
We demonstrate the extraction of scattering parameters in diffuse media from speckle statistics with a varible coherence laser source. Coherence time similar to the photon transit time distribution is essential for imaging of spatially-dependent scatter.
 
QFC5 9:30 - 9:45
Spontaneous Emission From Active Dielectric Microstructures, Thomas Sondergaard, Bjarne Tromborg, Technical University of Denmark, Lyngby, DENMARK
A rigorous Green's tensor approach is used to determine the spontaneous emission from emitter in active dielectric microstructures. Radiation mode angular emission patterns are presented for the spontaneous emission from an optical fibre amplifier.
 
QFC6 9:45 - 10:00
Self-Focusing of Emission From Thin Film Photonic Crystals, Thorsten Maka, Dmitry Chigrin, Sergei Romanov, Clivia Sotomayor-Torres, Manfred Mueller, Rudolf Zentel, University of Wuppertal, Wuppertal, GERMANY
Thin flim photonic crytals build from laser-dye loaded PMMA spheres have been prepared to from a PBG light source. Angle resolved photoluminescence spectra show a large extend of directionality in the emission in agreement with theoretical calculations.
 
 
10:30 - 13:00
Session: Condensed Matter Dynamics
Presider: Koos Duppen, University of Groningen, THE NETHERLANDS
 
 
QFG1 10:30 - 10:45
Hydrated-Electron Relaxation Dynamics Studied with 5-fs Pulses, Maxim Pshenichnikov, Andrius Baltuska, Douwe Wiersma, University of Groningen, Groningen, THE NETHERLANDS
We present frequency-resolved pump-probe experiments on the hydrated electron performed with 5-fs pulses. The excited-state lifetime of the electron is found to be ~50 fs while the hot-ground state equilibration proceeds on a ps time scale.
 
 
QFG2 10:45 - 11:00
Decay Times of Surface Plasmon Excitation in Metal Nanoparticles Determined by Laser-induced Persistent Spectral Hole Burning, Frank Stietz, J. Bosbach, T. Wenzel, T. Vartanyan, F. Traeger, Universitaet Kassel, Kassel, GERMANY
We demonstrate that spectral hole burning can be used to measure decay times of plasmon resonances in metal nanoparticles and find strong influence of electron confinement on the decay for particles with sizes below 10 nm.
 
QFG3 11:00 - 11:15
Relaxation of Hydride and Deuteride Localised Modes in the Alkaline Earth Fluorides, Jon-Paul Wells, Felix Free Electron Laser Facility, Nieuwegein, THE NETHERLANDS, Ivan Bradley, Heriot-Watt University, Edinburgh, UK, Glynn Jones, University of Canterbury, Christchurch, NEW ZEALAND, Ian Galbraith, Carl Pidgeon, Heriot-Watt University, Edinburch, UK
We report degenerate four wave mixing experiments for CaF2:H- and D- localised vibrational modes. We have measured and interpreted longitudinal and transverse relaxation times and studied the effects of intentional dopants.
 
QFG4 11:15 - 11:45 (Invited)
Ultrafast Chemical Dynamics in Liquid Water, C. Ronne, D. Madsen, C.L. Thomsen, J. Thogersen, Soren Keiding, University of Aarhus, Aarhus C, DENMARK
Using femtosecond spectroscopy and THz-spectroscopy we have studied the dynamics of H2O(l). In the talk we will attempt to connect the relaxation of different solutes (electrons, ClOH, ClO2) to the dynamics of the pure liquid.
 
QFG5 11:45 - 12:15 (Invited)
Ultrafast Multiple-Pulse Excitation Spectroscopy of pi-conjugated Polymers, S. V. Frolov, Bell Laboratories, Lucent Technologies, Murray Hill, NJ, USA
A novel spectroscopy is used to study ultrafast relaxation between different excited states in conjugated polymers and other organics. We demonstrate optical exciton dissociation, which in molecular systems is hindered by fast internal conversion.
 
QFG6 12:15 - 12:30
Excited State Evolution in Polydiacetylene Studied by Sub-10-FS Time Resolved Spectroscopy, Giulio Cerullo, Guglielmo Lanzani, M. Zavelani-Rossi, Sandro De Silvestri, Politecnico di Milano, Milano, ITALY, D. Comoretto, I. Moggio, G. Dellepiane, Universita di Genova, Genova, ITALY
We explore the optical dynamics of polycarbazolyldiacetylene in benzene solution with sub-10-fs time resolution. Ultrafast internal conversion to a dark state is observed. Oscillations in the time-dependent traces to impulsive stimulated Raman scattering.
 
 
QFG7 12:30 - 12:45
Direct Observation of the Ultrafast Electron Tranfer Process in a Polymer/Fullerene Blend, Giulio Cerullo,
Guglielmo Lanzani, Sandro De Silvestri, Politecnico di Milano, Milano, ITALY, Ch. Brabec, G. Zerza, N. Sariciftci, Johannes Kepler University Linz, Linz, AUSTRIA, J. Hummelen, University of Groningen, Groningen, THE NETHERLANDS
Conjugated polymer/ fullerene blends are excited by sub-10-fs optical pulses. The photoinduced charge transfer process is directly observed in the time domain, obtaining a forward electron transfer time constant of ~45 fs.
 
 
QFG8 12:45 - 13:00
Bright and Dark Resonances in Er:YAG:Generation, Measurement and Coherent Control, L. Luo, L Chen, D. C. Dai, Z. R. Qiu, Z. X Wang, J. Y. Zhou, Zhongshan University, Guangzhou, CHINA, J Kuhl, Max-Planck Institute, Stuttgart, GERMANY
Bright and dark resonances in Er:YAG are generated, measured and analyzed. Coherent control to manipulate the linear fluorescence and upconversion with phase-locked femtosecond optical pulses is demonstrated.
 ..  .
   

 http://www.ieee.org/society/leos