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Proceedings Paper

Raising the mode instability thresholds of fiber amplifiers
Author(s): Arlee V. Smith; Jesse J. Smith
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Paper Abstract

We use our numerical model of mode instability to analyze the influences of spontaneous thermal Rayleigh scattering (sTRS) and laser gain saturation on instability threshold powers. sTRS is stronger than the quantum noise used as the seed power for stimulated thermal Rayleigh scattering in previous studies, so the threshold is reduced by 15-25% with sTRS seeding. Gain saturation is strong in any efficient amplifier and we show how it can be exploited to raise instability thresholds be a factor of two or more while staying below the stimulated Brillouin threshold.

Paper Details

Date Published: 7 March 2014
PDF: 10 pages
Proc. SPIE 8961, Fiber Lasers XI: Technology, Systems, and Applications, 89611S (7 March 2014); doi: 10.1117/12.2037097
Show Author Affiliations
Arlee V. Smith, AS-Photonics, LLC (United States)
Jesse J. Smith, AS-Photonics, LLC (United States)

Published in SPIE Proceedings Vol. 8961:
Fiber Lasers XI: Technology, Systems, and Applications
Siddharth Ramachandran, Editor(s)

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