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Experimental investigation on coherent beam combination of a three-element fiber array based on target-in-the-loop technique

Geng Chao Li Xin-Yang Zhang Xiao-Jun Rao Chang-Hui

Experimental investigation on coherent beam combination of a three-element fiber array based on target-in-the-loop technique

Geng Chao, Li Xin-Yang, Zhang Xiao-Jun, Rao Chang-Hui
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  • Received Date:  03 March 2011
  • Accepted Date:  22 April 2011
  • Published Online:  15 March 2012

Experimental investigation on coherent beam combination of a three-element fiber array based on target-in-the-loop technique

  • 1. The Key Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu 610209, China;
  • 2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China
Fund Project:  Project supported by the National Natural Science Foundation of China (Grant No. 60978050).

Abstract: A kind of target-in-the-loop (TIL)technique which promises the coherent combination of multi-element laser beams in far field is experimentally demonstrated. The physical model of coherent beam combination (CBC)based on TIL is established. A kind of adaptive fiber optics collimator (AFOC)correcting optical path and tip/tilt errors simultaneously is employed to compensate phase errors between beamlets. The CBC of a 3-element fiber array based on TIL is successfully achieved and a perfect effect of CBC is captured. In this paper, we present a reference for long-distance transmission of multi-element coherent beams in real atmospheric environment.

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