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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry M. Van Driel
  • Vol. 24, Iss. 12 — Dec. 1, 2007
  • pp: 2930–2939

Coherent beam combining with multilevel optical phase-locked loops

Wei Liang, Naresh Satyan, Firooz Aflatouni, Amnon Yariv, Anthony Kewitsch, George Rakuljic, and Hossein Hashemi  »View Author Affiliations


JOSA B, Vol. 24, Issue 12, pp. 2930-2939 (2007)
http://dx.doi.org/10.1364/JOSAB.24.002930


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Abstract

Coherent beam combining (CBC) technology holds the promise of enabling laser systems with very high power and near-ideal beam quality. We propose and demonstrate a novel servo system composed of multilevel optical phase lock loops. This servo system is based on entirely electronic components and consequently can be considerably more compact and less expensive compared to servo systems made of optical phase/frequency shifters. We have also characterized the noise of a 1064 nm Yb-doped fiber amplifier to determine its effect on the CBC and studied theoretically the efficiency of combining a large array of beams with the filled-aperture implementation. In a proof-of-concept experiment we have combined two 100 mW 1064 nm semiconductor lasers with an efficiency of 94%.

© 2007 Optical Society of America

OCIS Codes
(140.3490) Lasers and laser optics : Lasers, distributed-feedback
(230.0250) Optical devices : Optoelectronics
(140.3298) Lasers and laser optics : Laser beam combining

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: August 21, 2007
Revised Manuscript: September 15, 2007
Manuscript Accepted: September 21, 2007
Published: November 8, 2007

Citation
Wei Liang, Naresh Satyan, Firooz Aflatouni, Amnon Yariv, Anthony Kewitsch, George Rakuljic, and Hossein Hashemi, "Coherent beam combining with multilevel optical phase-locked loops," J. Opt. Soc. Am. B 24, 2930-2939 (2007)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-24-12-2930


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