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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 53, Iss. 10 — Apr. 1, 2014
  • pp: 2163–2169

Phase locking of slab laser amplifiers via square wave dithering algorithm

Zhimeng Huang, Xuan Tang, Dayong Zhang, Xiaojun Wang, Jianfeng Li, Cangli Liu, and Qingsong Gao  »View Author Affiliations


Applied Optics, Vol. 53, Issue 10, pp. 2163-2169 (2014)
http://dx.doi.org/10.1364/AO.53.002163


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Abstract

An active phase locking of slab laser amplifiers via square wave dithering algorithm is demonstrated experimentally. The MPD technique based on dual-level square wave phase modulation, time division multiplexing, and single detector can achieve the phase error signal of amplifiers, but without coherent demodulation process. The experimental investigation on the 208 W coherent beam combining of two slab amplifiers shows that the whole system in a closed loop performs well over a long time observation. The contrast of the coherent combined beam profile is about 87% and the combining efficiency is nearly 90.4%. The beam steering with three kinds of steering angles based on coherent beam combining using square wave dithering algorithm is demonstrated numerically.

© 2014 Optical Society of America

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3290) Lasers and laser optics : Laser arrays
(140.3298) Lasers and laser optics : Laser beam combining

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: October 29, 2013
Revised Manuscript: January 3, 2014
Manuscript Accepted: January 16, 2014
Published: March 31, 2014

Citation
Zhimeng Huang, Xuan Tang, Dayong Zhang, Xiaojun Wang, Jianfeng Li, Cangli Liu, and Qingsong Gao, "Phase locking of slab laser amplifiers via square wave dithering algorithm," Appl. Opt. 53, 2163-2169 (2014)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-53-10-2163

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