Using a Volume Bragg Grating Instead of a Faraday Isolator in Lasers Incorporating Stimulated Brillouin Scattering Wavefront Reversal or Beam Cleanup

Abstract

A master-oscillator power-amplifier with stimulated Brillouin scattering (SBS) beam cleanup or wavefront reversal typically incorporates a Faraday isolator to outcouple the Stokes light, limiting the power scalability. Volume Bragg gratings (VBGs) have the potential for scaling to higher powers. We report here the results of tests on a VBG designed to resolve wavelengths 0.060 nm apart, corresponding to the 16 GHz frequency shift for SBS backscattering at 1064 nm in fused silica. Such an element may also find use in between stages of fiber amplifiers, for blocking the Stokes wave.

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Document Details

Document Type
Technical Report
Publication Date
Aug 29, 2011
Accession Number
ADA549904

Entities

People

  • Jeffrey O. White
  • John E. Mcelhenny
  • Leonid B. Glebov
  • Oleksiy Mokhun
  • Steven D. Rogers
  • Tigran Sanamyan
  • Vadim I. Smirnov

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Amplifiers
  • Bragg Gratings
  • Brillouin Scattering
  • Diffraction
  • Failure Mode And Effect Analysis
  • Figure Of Merit
  • Gratings (Spectra)
  • Laser Diodes
  • Lasers
  • Optical Isolators
  • Optical Materials
  • Optics
  • Power Amplifiers
  • Reflection
  • Scattering
  • Wavefronts
  • Waveplates

Fields of Study

  • Physics

Readers

  • Optical Physics and Photonics.

Technology Areas

  • Directed Energy