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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 38, Iss. 8 — Apr. 15, 2013
  • pp: 1277–1279

Interferometric phase shift compensation technique for high-power, tiled-aperture coherent beam combination

Haik Chosrowjan, Hiroaki Furuse, Masayuki Fujita, Yasukazu Izawa, Junji Kawanaka, Noriaki Miyanaga, Koichi Hamamoto, and Takahiro Yamada  »View Author Affiliations


Optics Letters, Vol. 38, Issue 8, pp. 1277-1279 (2013)
http://dx.doi.org/10.1364/OL.38.001277


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Abstract

We propose a simple coherent beam combining technique for applications in high-power multichannel laser amplifier systems with tiled aperture design. Using a photodiode pair coupled with piezo-actuator mirrors, we demonstrated robust beam combining bandwidth (1KHz) and root mean-square deviation (λ/25) for two beam channels. We estimate that the performance of this technique can be further enhanced in terms of operational bandwidth and phase locking accuracy. It is not limited by single beam power or channel number restrictions, does not require optical phase retrieval algorithms, or calibrations, and can be integrated into various master oscillator power amplifier architectures.

© 2013 Optical Society of America

OCIS Codes
(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: December 19, 2012
Revised Manuscript: March 5, 2013
Manuscript Accepted: March 7, 2013
Published: April 5, 2013

Citation
Haik Chosrowjan, Hiroaki Furuse, Masayuki Fujita, Yasukazu Izawa, Junji Kawanaka, Noriaki Miyanaga, Koichi Hamamoto, and Takahiro Yamada, "Interferometric phase shift compensation technique for high-power, tiled-aperture coherent beam combination," Opt. Lett. 38, 1277-1279 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-8-1277


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