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Conference Paper
Advanced Solid-State Photonics
San Antonio, Texas United States
February 2, 2003
ISBN: 1-55752-743-1
Fiber Systems (FS)

Scalable coherent beam combining of fiber lasers

Akira Shirakawa, Tomoki Sekiguchi, Keigo Matsuo, and Ken-ichi Ueda


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Highly efficient coherent addition of N fiber lasers by use of fused fiber couplers has been demonstrated. Addition efficiencies of 93.6, 96.1, and 81.6% have been obtained for N=2, 4, and 8, respectively. The wavelengths satisfying constructive interference among the fields in the length-different N laser arms have the highest effective reflectivities and are selectively excited as a coherently-added single beam output. The characteristics of the Y-shape coupled array is investigated and the scalability of this method is discussed. A preliminary result of the coupling of two LDs is also reported.

© 2003 Optical Society of America

OCIS Codes
(140.3290) Lasers and laser optics : Laser arrays
(140.3410) Lasers and laser optics : Laser resonators
(140.3510) Lasers and laser optics : Lasers, fiber

A. Shirakawa, T. Sekiguchi, K. Matsuo, and K. Ueda, "Scalable coherent beam combining of fiber lasers," in Advanced Solid-State Photonics, J. Zayhowski, ed., Vol. 83 of OSA Trends in Optics and Photonics (Optical Society of America, 2003), paper 82.

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