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Optics Letters

Optics Letters


  • Vol. 36, Iss. 8 — Apr. 15, 2011
  • pp: 1338–1340

Simultaneous spectrum and coherent combining by active phasing dual two-tone all-fiber MOPA chains

Xiaolin Wang, Jingyong Leng, Hu Xiao, Yanxing Ma, Pu Zhou, Wenbo Du, Xiaojun Xu, Zejin Liu, and Yijun Zhao  »View Author Affiliations

Optics Letters, Vol. 36, Issue 8, pp. 1338-1340 (2011)

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We present a new approach for simultaneous spectral and coherent combining in a master oscillator power amplifier (MOPA) configuration with active phasing. Spectrally combined single-frequency seed lasers are employed as a master oscillator for the all-fiber power amplifier chain, which provides robust performance suppressing of the stimulated Brillouin scattering effect, while coherent combining of spectrally combined amplifiers with active phase control provides stable in-phase combining, despite the strong phase fluctuation. In experiments, two spectrally combined seed MOPA chains are coherently combined with a total output power of 390 W . The power of the main lobe in the closed loop is two times of that value in the open loop, and visibility of more than 75% of the long-exposure interference pattern at the receiving plane is obtained.

© 2011 Optical Society of America

OCIS Codes
(140.3280) Lasers and laser optics : Laser amplifiers
(140.3290) Lasers and laser optics : Laser arrays
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3580) Lasers and laser optics : Lasers, solid-state

ToC Category:
Lasers and Laser Optics

Original Manuscript: February 10, 2011
Revised Manuscript: March 14, 2011
Manuscript Accepted: March 14, 2011
Published: April 6, 2011

Xiaolin Wang, Jingyong Leng, Hu Xiao, Yanxing Ma, Pu Zhou, Wenbo Du, Xiaojun Xu, Zejin Liu, and Yijun Zhao, "Simultaneous spectrum and coherent combining by active phasing dual two-tone all-fiber MOPA chains," Opt. Lett. 36, 1338-1340 (2011)

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