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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 15 — Jul. 28, 2014
  • pp: 18483–18489

Kilowatt Ytterbium-Raman fiber laser

Lei Zhang, Chi Liu, Huawei Jiang, Yunfeng Qi, Bing He, Jun Zhou, Xijia Gu, and Yan Feng  »View Author Affiliations

Optics Express, Vol. 22, Issue 15, pp. 18483-18489 (2014)

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A kilowatt-level Raman fiber laser is demonstrated with an integrated Ytterbium-Raman fiber amplifier architecture. A high power Ytterbium-doped fiber master oscillator power amplifier at 1080 nm is seeded with a 1120 nm fiber laser at the same time. By this way, a kilowatt-level Raman pump laser at 1080 nm and signal laser at 1120 nm is combined in the fiber core. The subsequent power conversion from 1080 nm to 1120 nm is accomplished in a 70 m long passive fiber. A 1.28 kW all-fiber Raman amplifier at 1120 nm with an optical efficiency of 70% is demonstrated, limited only by the available pump power. To the best of our knowledge, this is the first report of Raman fiber laser with over one kilowatt output.

© 2014 Optical Society of America

OCIS Codes
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3550) Lasers and laser optics : Lasers, Raman
(290.5910) Scattering : Scattering, stimulated Raman

ToC Category:
Lasers and Laser Optics

Original Manuscript: May 23, 2014
Revised Manuscript: July 10, 2014
Manuscript Accepted: July 10, 2014
Published: July 23, 2014

Lei Zhang, Chi Liu, Huawei Jiang, Yunfeng Qi, Bing He, Jun Zhou, Xijia Gu, and Yan Feng, "Kilowatt Ytterbium-Raman fiber laser," Opt. Express 22, 18483-18489 (2014)

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