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Proceedings Paper

Spectral brightness scaling of kW fiber amplifiers via nonlinear linewidth narrowing (Conference Presentation)

Paper Abstract

We recently demonstrated a seed modulation format that is effective in suppressing SBS in kW-class fiber amplifiers. By applying synchronous amplitude and frequency modulation, a broad low power seed spectrum can be spectrally narrowed via self-phase modulation as it is amplified, thus reducing the SBS gain and enabling narrower linewidths. Since the approach leverages the fiber Kerr nonlinearity, SBS suppression becomes more effective as fiber powers and lengths increase. We will present updated results extending this approach toward higher modulation depths, higher powers, and narrower linewidths.

Paper Details

Date Published: 11 March 2020
Proc. SPIE 11260, Fiber Lasers XVII: Technology and Systems, 1126004 (11 March 2020); doi: 10.1117/12.2546728
Show Author Affiliations
Gregory D. Goodno, Northrop Grumman Aerospace Systems (United States)
Joshua Rothenberg, Northrop Grumman Aerospace Systems (United States)

Published in SPIE Proceedings Vol. 11260:
Fiber Lasers XVII: Technology and Systems
Liang Dong, Editor(s)

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