Multi-wavelength laser active coherent combination

doi:10.1088/1674-1056/21/5/054205

中国物理B ›› 2012, Vol. 21 ›› Issue (5): 54205-054205.doi: 10.1088/1674-1056/21/5/054205

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Multi-wavelength laser active coherent combination

韩凯,许晓军,刘泽金

College of Opto-electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China

收稿日期:2011-08-23 修回日期:2012-04-27 出版日期:2012-04-01 发布日期:2012-04-01
基金资助:
Project supported by the Innovation Foundation for Postgraduates in the National University of Defense Technology, China (Grant No. S090701).

Multi-wavelength laser active coherent combination

Han Kai(韩凯)^†, Xu Xiao-Jun(许晓军), and Liu Ze-Jin(刘泽金)

College of Opto-electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China

Received:2011-08-23 Revised:2012-04-27 Online:2012-04-01 Published:2012-04-01
Supported by:
Project supported by the Innovation Foundation for Postgraduates in the National University of Defense Technology, China (Grant No. S090701).

摘要/Abstract

摘要： A seed laser oscillating at different frequencies is proved to have the potential to mitigate the stimulated Brillouin scattering (SBS) effect in a fiber amplifier, which may increase the emission power of a coherent beam combination (CBC) system greatly. In this study, a basic mathematical model describing the multi-wavelength CBC is proposed on the fundamentals of CBC. A useful method for estimating the combination effect and analysing the feasibility and the validity of the multi-wavelength coherent combination is provided. In the numerical analysis, accordant results with four-wavelength four-channel CBC experiments are obtained. Through calculations of some examples with certain spectra, the unanticipated excellent combination effect with a few frequencies involved is explained, and the dependence of the combination effect on the variance of the amplifier chain length and the channel number is clarified.

关键词: fiber laser, coherent beam combination, multi-wavelength laser, optical path difference

Abstract: A seed laser oscillating at different frequencies is proved to have the potential to mitigate the stimulated Brillouin scattering (SBS) effect in a fiber amplifier, which may increase the emission power of a coherent beam combination (CBC) system greatly. In this study, a basic mathematical model describing the multi-wavelength CBC is proposed on the fundamentals of CBC. A useful method for estimating the combination effect and analysing the feasibility and the validity of the multi-wavelength coherent combination is provided. In the numerical analysis, accordant results with four-wavelength four-channel CBC experiments are obtained. Through calculations of some examples with certain spectra, the unanticipated excellent combination effect with a few frequencies involved is explained, and the dependence of the combination effect on the variance of the amplifier chain length and the channel number is clarified.

Key words: fiber laser, coherent beam combination, multi-wavelength laser, optical path difference

中图分类号: (Coherence)

42.25.Kb

42.62.-b (Laser applications) 42.55.Wd (Fiber lasers)

韩凯,许晓军,刘泽金. Multi-wavelength laser active coherent combination[J]. 中国物理B, 2012, 21(5): 54205-054205.

Han Kai(韩凯), Xu Xiao-Jun(许晓军), and Liu Ze-Jin(刘泽金) . Multi-wavelength laser active coherent combination[J]. Chin. Phys. B, 2012, 21(5): 54205-054205.

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Multi-wavelength laser active coherent combination

Multi-wavelength laser active coherent combination

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