Coherent beam combining with multilevel optical phase-locked loops
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%.
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.Files
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Additional details
- Eprint ID
- 9548
- Resolver ID
- CaltechAUTHORS:LIAjosab07
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2008-02-04Created from EPrint's datestamp field
- Updated
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2019-10-03Created from EPrint's last_modified field