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Title:
AM/FM SEED FOR NONLINEAR SPECTRALLY COMPRESSED FIBER AMPLIFIER
Document Type and Number:
WIPO Patent Application WO/2019/147327
Kind Code:
A3
Abstract:
A fiber amplifier system including an optical source providing an optical seed beam and an FM electro-optic modulator (EOM) that frequency modulates the seed beam to broaden its spectral linewidth. The system also includes an AM EOM that modulates the seed beam to provide an amplitude modulated seed beam that is synchronized with the frequency modulated seed beam. The system also includes a non-linear fiber amplifier receiving the AM and FM modulated seed beam, wherein the amplitude modulated seed beam causes self-phase modulation in the fiber amplifier that phase modulates the seed beam as it is being amplified by the fiber amplifier that acts to cancel the spectral linewidth broadening caused by the frequency modulation.

Inventors:
GOODNO, Gregory, D. (6048 West 75th Street, Los Angeles, CA, 90045, US)
Application Number:
US2018/061960
Publication Date:
December 26, 2019
Filing Date:
November 20, 2018
Export Citation:
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Assignee:
NORTHROP GRUMMAN SYSTEMS CORPORATION (2980 Fairview Park Drive, Falls Church, VA, 22042-4511, US)
International Classes:
H01S3/00; H01S3/067; H01S3/10; H01S3/23
Domestic Patent References:
WO2011053816A12011-05-05
Foreign References:
US20100128744A12010-05-27
US9036252B12015-05-19
US5515196A1996-05-07
US20070201880A12007-08-30
Other References:
ENGIN DORUK ET AL: "1 kW cw Yb-fiber-amplifier with <0.5GHz linewidth and near-diffraction limited beam-quality for coherent combining application", FIBER LASERS VIII: TECHNOLOGY, SYSTEMS, AND APPLICATIONS, SPIE, 1000 20TH ST. BELLINGHAM WA 98225-6705 USA, vol. 7914, no. 1, 10 February 2011 (2011-02-10), pages 1 - 7, XP060010593, DOI: 10.1117/12.875701
Attorney, Agent or Firm:
MILLER, John, A. (Shumaker, Loop & Kendrick LLP,42690 Woodward Ave., Ste. 30, Bloomfield Hills MI, 48304, US)
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