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

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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.

Author(s):
Mcelhenny, John E. ; White, Jeffrey O. ; Rogers, Steven D.
Author Organization(s):
ARMY RESEARCH LAB ADELPHI MD SENSORS AND ELECTRON DEVICES DIRECTORATE
Descriptive Note:
Progress rept.
Supplementary Note:
The original document contains color images.
Pagination:
0020

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
ARL-MR-0796
Monitor Series:
ARL/SED
 Subject Terms
Modernization Areas:
Directed Energy
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*AMPLIFIERS, *OSCILLATORS, *SOLID STATE LASERS, BEAMS(RADIATION), BRAGG ANGLE, GRATINGS(SPECTRA), LIGHT SCATTERING, MULTIMODE, PEAK POWER, PHASE CONJUGATION, PHONONS, POWER LEVELS, WAVEFRONTS
Field(s)/Group(s):
Electrical and Electronic Equipment, Lasers and Masers
Keyword(s):
SBS(STIMULATED BRILLOUIN SCATTERING), WAVEFRONT REVERSAL, PHASE CONJUGATION, FIBER AMPLIFIERS
Report Date:
2011 Sep 01
Creation Date:
2011 Dec 08