Spectral beam combining of fiber lasers based on a transmitting volume Bragg grating |
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Authors: | Zhan Sheng-bao Zhao Shang-hong Chu Xing-chun Wu Zhuo-liang Shi Lei |
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Affiliation: | Telecommunication Engineering Institute, Air Force Engineering University, Xi’an 710077, China |
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Abstract: | Based on the principle of spectral beam combining using a transmitting volume Bragg grating, a simple experimental setup was designed, in which an approach to control the incidence angles of beams using a focusing lens is presented. The experimental results for the spectral beam combining of two fiber lasers are reported. The gain media used in this experiment were large-mode area Er3+/Yb3+ co-doped double-clad fibers, pumped by semiconductor lasers. The output powers of the two fiber lasers were 0.39 and 0.53 W, respectively. With a grating diffraction efficiency of about 60%, a maximum combined power of 0.64 W with an absolute combining efficiency of about 69.6% was achieved. |
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Keywords: | Spectral beam combining Er3+/Yb3+ co-doped double-clad fiber lasers Transmitting volume Bragg grating |
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