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Proceedings Paper

Investigations of SBS and laser gain competition in high-power phase modulated fiber amplifiers
Author(s): Angel Flores; Iyad Dajani; Dane Hult; Craig Robin
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Paper Abstract

We present experimental results of SBS suppression in high power, monolithic, Yb-doped fiber amplifiers via phase modulated laser gain competition. To narrow the linewidth, two-tone laser gain competition between broad (1036 nm) and narrow linewidth (1064 nm) laser signals is investigated in conjunction with phase modulation and yields pump limited output powers of 600 W. Here integration of both two-tone and pseudo random bit sequence (PRBS) phase modulation concepts, generated SBS enhancement factors of greater than 17x at a modulation frequency of 500 MHz, without reaching the SBS threshold. Significantly, the results represent a near order of magnitude reduction in linewidth over current high-power, monolithic, Yb-doped fiber amplifiers.

Paper Details

Date Published: 20 February 2014
PDF: 6 pages
Proc. SPIE 8964, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XIII, 89640R (20 February 2014); doi: 10.1117/12.2044196
Show Author Affiliations
Angel Flores, Air Force Research Lab. (United States)
Iyad Dajani, Air Force Research Lab. (United States)
Dane Hult, Trex Enterprises Corp. (United States)
Craig Robin, Air Force Research Lab. (United States)


Published in SPIE Proceedings Vol. 8964:
Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XIII
Konstantin L. Vodopyanov, Editor(s)

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