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Multikilohertz stimulated Brillouin scattering.

M A O'Key, M R Osborne

    Optics Letters
    |October 22, 2009
    PubMed
    Summary
    This summary is machine-generated.

    This study demonstrates multikilohertz stimulated-Brillouin-scattering phase conjugation for copper-vapor lasers. This technique enables effective aberration correction, improving laser performance and avoiding absorption losses.

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    Area of Science:

    • Optics and Photonics
    • Laser Physics
    • Nonlinear Optics

    Background:

    • Copper-vapor lasers (CVLs) are efficient sources for various applications but suffer from inherent beam quality issues.
    • Stimulated Brillouin scattering (SBS) phase conjugation offers a potential method for correcting laser beam aberrations.
    • Previous SBS applications have limitations with the specific wavelengths and characteristics of CVL radiation.

    Purpose of the Study:

    • To achieve multikilohertz stimulated-Brillouin-scattering (SBS) phase conjugation of copper-vapor laser (CVL) radiation for the first time.
    • To investigate the potential of SBS for double-pass aberration correction in CVLs.
    • To explore the influence of SBS medium parameters on conjugation efficiency and fidelity.

    Main Methods:

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  • Utilized a multikilohertz pulsed copper-vapor laser system.
  • Employed stimulated-Brillouin-scattering phase conjugation using various media.
  • Analyzed the Stokes radiation wavelength shift for aberration correction.
  • Investigated the effects of SBS medium properties (type, purity, geometry, flow) on performance.

    • Main Results:

    • Successfully demonstrated multikilohertz SBS phase conjugation of CVL radiation.
    • Showcased that the small Stokes wavelength shift enables effective double-pass aberration correction.
    • Identified preliminary effects of medium parameters on SBS efficiency and conjugation fidelity.

    Conclusions:

    • Multikilohertz SBS phase conjugation is feasible for copper-vapor lasers.
    • This technique provides a viable method for correcting CVL beam aberrations, enhancing output quality.
    • Further research into SBS medium optimization can improve the efficiency and fidelity of the phase conjugation process.