Publications (7)8.21 Total impact
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Conference Proceeding: Sonography: a new method to measure laser filaments in air
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ABSTRACT: The sound emitted from a filament was measured using a microphone. A model describes the sound emission mechanism, which allows to retrieve the light intensity as well as the free electron density in the filament.Quantum Electronics and Laser Science, 2003. QELS. Postconference Digest; 07/2003 -
Article: Backward supercontinuum emission from a filament generated by ultrashort laser pulses in air.
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ABSTRACT: Backward emission of the supercontinuum from a light filament induced by high-intensity femtosecond laser pulses propagating in air has been observed to be enhanced compared with linear Rayleigh-Mie scattering. This enhancement is interpreted as a nonlinear scattering process onto longitudinal refractive-index changes induced by the laser pulse itself. The spectral dependence of the supercontinuum angular distribution is also investigated.Optics Letters 05/2001; 26(8):533-5. · 3.40 Impact Factor -
Article: Infrared extension of the super continuum generated by femtosecond terawatt laser pulses propagating in the atmosphere.
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ABSTRACT: We investigated the spectral behavior of a white-light continuum generated in air by 2-TW femtosecond laser pulses at 800 nm. The spectrum extends at least from 300 nm to 4.5 mum. From 1 to 1.6 mum the continuum's intensity increases strongly with the laser energy and depends on the initial chirp.Optics Letters 10/2000; 25(18):1397-9. · 3.40 Impact Factor -
Article: Frequency Agile Infrared Lidar Based on a NonTracking KNbO(3) Optical Parametric Oscillator.
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ABSTRACT: We present what is to our knowledge the first mid-IR lidar system based on a KNbO(3) optical parametric oscillator pumped by a Ti:sapphire laser. The optical parametric oscillator works in a nontracking configuration and provides high-frequency agility from 1 to 4 mum. This system constitutes an extension to the IR of UV lidars described previously [Europhys. J. D 4, 231 (1998); Appl. Opt. 37, 2231 (1998); Atmos. Environ. 32, 2957 (1998)] for the determination of aerosol concentrations in urban atmospheres. As first field tests, measurements at 3.5 mum were performed in fog conditions. Water droplet size and concentration were determined from Mie calculations. Quantitative temporal mappings and angular profiles are presented.Applied Optics 08/2000; 39(21):3620-5. · 1.41 Impact Factor -
Article: Lidar infrarouge basé sur un oscillateur paramétrique optique pour la détection des aérosols
http://dx.doi.org/10.1051/jp4:2000836. -
Article: Teramobile: A mobile femtosecond-terawatt laser and detection system
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ABSTRACT: We describe the Teramobile system, a new mobile femtosecond multi-terawatt laser and detection system based on a state-of-the art CPA laser system embedded in a standard freight container, as well as a mobile detection unit allowing a characterization of the nonlinear propagation of high power laser pulses over long horizontal distances. The unique mobility feature of the whole system opens the way to previously unreachable applications for high-power laser pulses in the field of atmospheric research (lidar, laser-triggered lightning), which are also briefly reviewed.http://dx.doi.org/10.1051/epjap:2002090. -
Article: Rétro-émission du continuum généré dans un filament induit par des impulsions ultra-intenses
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ABSTRACT: La distribution angulaire de l'émission du continuum de lumière blanche généré dans un filament autoguidé créé par des impulsions laser de forte puissance a été mesurée. Elle montre une émission préférentielle vers l'arrière, favorisant l'application à la télédétection de composés atmosphériques par lidar.http://dx.doi.org/10.1051/jp4:20020201.
Top Journals
- Optics Letters (2)
- Applied Optics (1)
Institutions
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2003
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Université Claude Bernard Lyon 1
- Laboratoire de spectrométrie ionique et moléculaire (LASIM)
Villeurbanne, Rhone-Alpes, France
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