The Experts below are selected from a list of 252 Experts worldwide ranked by ideXlab platform

Gaurav Bahl - One of the best experts on this subject based on the ideXlab platform.

Richard B. Miles - One of the best experts on this subject based on the ideXlab platform.

  • coherent rayleigh Brillouin Scattering in molecular gases
    Physical Review A, 2004
    Co-Authors: Xingguo Pan, Mikhail N. Shneider, Richard B. Miles
    Abstract:

    We present an experimental and theoretical study of the coherent Rayleigh-Brillouin Scattering in gases in the kinetic regime. Gas density perturbation waves were generated by two crossing pump laser beams through optical dipole forces. A probe laser beam was then coherently scattered from the perturbation waves. The line shape of the scattered light was modeled using kinetic theory. The model takes into account the internal energy modes of the gas particles and is applicable to both molecular and atomic gases. We discuss the implication of coherent Rayleigh-Brillouin Scattering on kinetic theory and photon matter interaction.

  • Coherent Rayleigh-Brillouin Scattering.
    Physical review letters, 2002
    Co-Authors: Xingguo Pan, Mikhail N. Shneider, Richard B. Miles
    Abstract:

    Coherent Rayleigh-Brillouin Scattering in gases has been studied experimentally for the first time in the kinetic regime and shown to give line shapes that differ significantly from the spontaneous Rayleigh-Brillouin Scattering. A kinetic model was developed to obtain an analytic solution of the line shape for monatomic gases, and good agreement with the experimental data was achieved.

R.g. Harrison - One of the best experts on this subject based on the ideXlab platform.

  • trends in stimulated Brillouin Scattering and optical phase conjugation
    Laser and Particle Beams, 2008
    Co-Authors: Martin Ostermeyer, V I Kovalev, O Slezak, Jin Woo Yoon, A.a. Fotiadi, R.g. Harrison, Patrice Megret, H.j. Kong, Milan Kalal, Jae Sung Shin
    Abstract:

    An overview on current trends in stimulated Brillouin Scattering and optical phase conjugation is given. This report is based on the results of the “Second International Workshop on stimulated Brillouin Scattering and phase conjugation” held in Potsdam/Germany in September 2007. The properties of stimulated Brillouin Scattering are presented for the compensation of phase distortions in combination with novel laser technology like ceramics materials but also for e.g., phase stabilization, beam combination, and slow light. Photorefractive nonlinear mirrors and resonant refractive index gratings are addressed as phase conjugating mirrors in addition.

  • Threshold for stimulated Brillouin Scattering in optical fiber.
    Optics express, 2007
    Co-Authors: V I Kovalev, R.g. Harrison
    Abstract:

    We show that in optical fiber the threshold exponential gain, Gth, for stimulated Brillouin Scattering initiated by spontaneous Brillouin Scattering is functionally and strongly dependent on the material, length and numerical aperture of the fiber and the pump wavelength. For silica fiber we show that the value of Gth at λ≅1 µm ranges from as low as ~5 in long fiber (≥ few kms) to ~10–12 in fibers of ~100 m length and ~20–23 for very short fibers (

  • Stimulated Brillouin Scattering
    Scattering, 2002
    Co-Authors: R.g. Harrison
    Abstract:

    Publisher Summary This chapter provides an overview of stimulated Brillouin Scattering (SBS). Brillouin Scattering is a spontaneous light Scattering process from acoustic waves in materials. The process is said to be spontaneous since the light Scattering is caused by thermal fluctuations in the media and the incident light field is sufficiently weak that its presence does not change the dielectric property of the material. There are two basic types of experimental configurations: SBS generator and SBS amplifier. The former, normal SBS is a genuine Scattering process involving the interaction of incident and scattered light waves with an acoustic wave. In this configuration, only one incident light field is supplied externally and both scattered light and acoustic waves are generated during the Scattering process in the medium. The latter process is described as a parametric interaction, in which an intense pump wave at ω1 together with a weak input signal wave at ω2 are incident on the Brillouin medium and the amplification of the signal wave is accompanied by a generation of an “idler” acoustic wave at Ω = ω1-ω2.

Junhwan Kim - One of the best experts on this subject based on the ideXlab platform.

Guangcan Guo - One of the best experts on this subject based on the ideXlab platform.