Liang, Wei and Satyan, Naresh and Aflatouni, Firooz and Yariv, Amnon and Kewitsch, Anthony and Rakuljic, George and Hashemi, Hossein (2007) Coherent beam combining with multilevel optical phase-locked loops. Journal of the Optical Society of America B, 24 (12). pp. 2930-2939. ISSN 0740-3224 http://resolver.caltech.edu/CaltechAUTHORS:LIAjosab07
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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%.
|Additional Information:||© 2007 Optical Society of America. Original Manuscript: August 21, 2007. Manuscript Accepted: September 21, 2007. Revised Manuscript: September 15, 2007. Published: November 8, 2007. The authors wish to acknowledge the support of the Defense Advanced Research Projects Agency’s (DARPA’s) Microsystems Technology Office (J. Mangano) and T. Salvi of Kirtland Air Force Base.|
|Subject Keywords:||Laser beam combining; Distributed feedback lasers; Optoelectronics|
|Official Citation:||W. Liang, N. Satyan, F. Aflatouni, A. Yariv, A. Kewitsch, G. Rakuljic, and H. Hashemi, "Coherent beam combining with multilevel optical phase-locked loops," J. Opt. Soc. Am. B 24, 2930-2939 (2007) http://www.opticsinfobase.org/abstract.cfm?URI=josab-24-12-2930|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Archive Administrator|
|Deposited On:||04 Feb 2008|
|Last Modified:||26 Dec 2012 09:49|
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