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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 36, Iss. 6 — Mar. 15, 2011
  • pp: 951–953

Coherent beam combination of 1.08 kW fiber amplifier array using single frequency dithering technique

Yanxing Ma, Xiaolin Wang, Jinyong Leng, Hu Xiao, Xiaolin Dong, Jiajian Zhu, Wenbo Du, Pu Zhou, Xiaojun Xu, Lei Si, Zejin Liu, and Yijun Zhao  »View Author Affiliations


Optics Letters, Vol. 36, Issue 6, pp. 951-953 (2011)
http://dx.doi.org/10.1364/OL.36.000951


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Abstract

Coherent beam combination of a 1.08 kW fiber amplifier array has been demonstrated for the first time, to our knowledge. In the experiment, nine fiber amplifiers are tiled into a 3 × 3 array, and the output power of each amplifier is approximately 120 W . A single frequency dithering algorithm is used to compensate the phase noises between the elements, which runs on a signal processor based on field programmable gate array for phase control on the fiber amplifiers. When the phase control system goes into closed loop, the fringe contrast of the far-field intensity pattern is improved to more than 85%, and the residual phase error is less than λ / 15 .

© 2011 Optical Society of America

OCIS Codes
(140.3290) Lasers and laser optics : Laser arrays
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.3298) Lasers and laser optics : Laser beam combining

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: January 4, 2011
Manuscript Accepted: January 26, 2011
Published: March 11, 2011

Citation
Yanxing Ma, Xiaolin Wang, Jinyong Leng, Hu Xiao, Xiaolin Dong, Jiajian Zhu, Wenbo Du, Pu Zhou, Xiaojun Xu, Lei Si, Zejin Liu, and Yijun Zhao, "Coherent beam combination of 1.08 kW fiber amplifier array using single frequency dithering technique," Opt. Lett. 36, 951-953 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-6-951

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