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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 33 — Nov. 20, 2009
  • pp: 6537–6540

Coherent beam combination of a hexagonal distributed high power fiber amplifier array

Pu Zhou, Yanxing Ma, Xiaolin Wang, Haotong Ma, Jianhua Wang, Xiaojun Xu, and Zejin Liu  »View Author Affiliations


Applied Optics, Vol. 48, Issue 33, pp. 6537-6540 (2009)
http://dx.doi.org/10.1364/AO.48.006537


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Abstract

We demonstrate the coherent beam combination of a hexagonal distributed high power fiber amplifier array. Six polarization-maintained fiber amplifiers are tiled into a hexagonal array by use of a novel beam combiner. The phase control signal for fiber amplifiers is generated by running a stochastic parallel gradient descent algorithm on a digital signal processor. The coherent beam combination with a total output power of 73.5 ‚ÄČ W is demonstrated. The contrast of the coherent combined beam profile is as high as 81% when the system is closed-loop controlled.

© 2009 Optical Society of America

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(140.3290) Lasers and laser optics : Laser arrays
(140.3510) Lasers and laser optics : Lasers, fiber

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: September 18, 2009
Revised Manuscript: October 29, 2009
Manuscript Accepted: November 4, 2009
Published: November 17, 2009

Citation
Pu Zhou, Yanxing Ma, Xiaolin Wang, Haotong Ma, Jianhua Wang, Xiaojun Xu, and Zejin Liu, "Coherent beam combination of a hexagonal distributed high power fiber amplifier array," Appl. Opt. 48, 6537-6540 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-33-6537

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