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Proceedings Paper

Experimental and theoretical studies of single frequency PCF amplifier with output of 400 W
Author(s): Craig Robin; Iyad Dajani; Christopher Vergien; Clint Zeringue; Thomas M. Shay
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Paper Abstract

We report on experimental and theoretical investigations of single frequency high power PCF amplifiers. A model describing the interplay among laser gain, thermals effects, and SBS was developed to study the power limitations of single frequency amplifiers in general, and PCF amplifiers in particular. A distributed noise term was used to initiate the SBS process with the Stokes light spanning multi-frequency channels. The use of thermal and acoustic gradients in conjunction was considered and indicated marginal improvement. In the set of experiments, slope efficiencies as high as 77% were obtained with a maximum output of 427 W. The linewidth was measured and yielded values that were less than 10 KHz. A pump-probe measurement of the Brillouin gain spectrum revealed secondary peaks lying at the highfrequency side. Measurements conducted on a novel PCF, specifically designed to utilize thermal and acoustic gradients in conjunction, showed the existence of two primary gain peaks.

Paper Details

Date Published: 17 February 2010
PDF: 11 pages
Proc. SPIE 7580, Fiber Lasers VII: Technology, Systems, and Applications, 75801I (17 February 2010); doi: 10.1117/12.842566
Show Author Affiliations
Craig Robin, Air Force Research Lab. (United States)
Iyad Dajani, Air Force Research Lab. (United States)
Christopher Vergien, Air Force Research Lab. (United States)
Clint Zeringue, Air Force Research Lab. (United States)
Thomas M. Shay, Air Force Research Lab. (United States)


Published in SPIE Proceedings Vol. 7580:
Fiber Lasers VII: Technology, Systems, and Applications
Kanishka Tankala, Editor(s)

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