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Proceedings Paper

Mutual injection-locking of two double-clad fibers for coherent beam combining with corner cube
Author(s): Rui Zheng; Lixin Xu; Yang Liu; Kun Gao; Yong Cheng; Hai Ming
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Paper Abstract

We experimentally demonstrate coherent beam combination of two double-clad fiber lasers using mutual injectionlocking in an external cavity coupling structure. The configuration employs a corner cube as a mutual injection component to couple the two lasers. A beam splitter acts as the output coupler and far field intensity has been observed at the lens focus plane. We observe interferential fringes with the contrast ratio of 0.5, and a combination efficiency of 80% is achieved. The total output power exceeds 11 W. We present simulative discussion here on the influence of multitransversal modes of element beam. The multi-mode operation degrades the quality of the output beam of main peak power, fringe contrast ratio, and other parameters. The configuration has the potential to scale to more lasers without much structural modification.

Paper Details

Date Published: 24 November 2009
PDF: 7 pages
Proc. SPIE 7509, 2009 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Integration, 75090M (24 November 2009); doi: 10.1117/12.837892
Show Author Affiliations
Rui Zheng, Univ. of Science and Technology of China (China)
Lixin Xu, Univ. of Science and Technology of China (China)
Yang Liu, Wuhan Ordnance Noncommissioned Officer Academy (China)
Kun Gao, Univ. of Science and Technology of China (China)
Yong Cheng, Wuhan Ordnance Noncommissioned Officer Academy (China)
Hai Ming, Univ. of Science and Technology of China (China)


Published in SPIE Proceedings Vol. 7509:
2009 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Integration
Xuping Zhang; Wojtek J. Bock; Xuejun Lu; Hai Ming, Editor(s)

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