| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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A 168-W high-power single-frequency amplifier in an all-fiber configuration |
| Xiao Hu(肖虎), Dong Xiao-Lin(董小林), Zhou Pu(周朴)†, Xu Xiao-Jun(许晓军), and Zhao Guo-Min(赵国民) |
| College of Opticelectric Science and Engineering, National University of Defense Technology, Changsha 410073, China |
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Abstract We present a high-power, single-frequency, narrow linewidth fiber amplifier based on master oscillator power amplification chains in an all-fiber configuration. The effect of the delivery fiber on the maximum output power is studied. A home-made 1064-nm seed laser with a 20-kHz linewidth is boosted to 129 W, and limited by stimulated Brillouin scattering (SBS) when the delivery fiber is 1.2 m long. By shortening the delivery fiber length to 0.7 m, the SBS threshold is increased efficiently and the maximum output power rises to 168 W with an 82.9% power conversion efficiency. The experimental results indicate that the output power can be further raised by shortening the delivery fiber length and increasing the pump power.
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Received: 29 May 2011
Revised: 22 August 2011
Accepted manuscript online:
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PACS:
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42.55.Wd
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(Fiber lasers)
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42.60.Da
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(Resonators, cavities, amplifiers, arrays, and rings)
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42.60.By
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(Design of specific laser systems)
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42.60.Lh
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(Efficiency, stability, gain, and other operational parameters)
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Corresponding Authors:
Zhou Pu,zhoupu203@163.com
E-mail: zhoupu203@163.com
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Cite this article:
Xiao Hu(肖虎), Dong Xiao-Lin(董小林), Zhou Pu(周朴), Xu Xiao-Jun(许晓军), and Zhao Guo-Min(赵国民) A 168-W high-power single-frequency amplifier in an all-fiber configuration 2012 Chin. Phys. B 21 034207
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