High Power Multimode Fiber Master Oscillator Power Amplifier (MOPA) with Stimulated Brillouin Scattering (SBS) Beam Cleanup and Phase Conjugation

Abstract

This is a study, at the 102 W power level, of the feasibility of using stimulated Brillouin scattering (SBS) beam cleanup and wavefront reversal to obtain 105 W of single-mode output from a multi-mode fiber amplifier. These techniques allow power scaling by circumventing the problem of maintaining single-mode operation in a fiber with a large core. We have achieved 51-W peak power (34 W average) out of the beam cleanup fiber master oscillator power amplifier (MOPA) system. We also demonstrated the use of a volume Bragg grating to outcouple the Stokes beam in such a system.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2011
Accession Number
ADA552015

Entities

People

  • Jeffrey O. White
  • John E. Mcelhenny
  • Steven D. Rogers

Organizations

  • United States Army Research Laboratory

Tags

DTIC Thesaurus Topics

  • Amplifiers
  • Bragg Gratings
  • Brillouin Scattering
  • Diffraction
  • Geometry
  • Gratings (Spectra)
  • Lasers
  • Multimode
  • Optical Isolators
  • Oscillators
  • Peak Power
  • Phase Conjugation
  • Power Amplifiers
  • Power Levels
  • Scattering
  • Wavefronts
  • Waveplates

Fields of Study

  • Physics

Readers

  • Optical Physics and Photonics.