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Proceedings Paper

Experimental and theoretical studies of phase modulation in Yb-doped fiber amplifiers
Author(s): Angel Flores; Chunte Lu; Craig Robin; Shadi Naderi; Christopher Vergien; Iyad Dajani
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Paper Abstract

We present detailed studies of the effect of sinusoidal phase modulation on stimulated Brillouin scattering (SBS) in ytterbium-doped fiber amplifiers. Based on a time-dependent SBS model, SBS enhancement factor versus pump linewidth for different modulation depths ranging from 0 to π , and modulation frequencies ranging from 30 MHz to 500 MHz were analyzed. In addition, experimental validation of SBS suppression via sinusoidal phase modulation is presented with experimental results agreeing well with the model and simulations. Furthermore, narrow linewidth coherent beam combining (CBC) of 5 sinusoidal phase modulated lasers is demonstrated via LOCSET.

Paper Details

Date Published: 22 May 2012
PDF: 8 pages
Proc. SPIE 8381, Laser Technology for Defense and Security VIII, 83811B (22 May 2012); doi: 10.1117/12.921704
Show Author Affiliations
Angel Flores, Air Force Research Lab. (United States)
Chunte Lu, Air Force Research Lab. (United States)
Craig Robin, Air Force Research Lab. (United States)
Shadi Naderi, Air Force Research Lab. (United States)
Christopher Vergien, Air Force Research Lab. (United States)
Iyad Dajani, Air Force Research Lab. (United States)


Published in SPIE Proceedings Vol. 8381:
Laser Technology for Defense and Security VIII
Mark Dubinskii; Stephen G. Post, Editor(s)

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