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Target-in-the-loop high-power adaptive phase-locked fiber laser array using single-frequency dithering technique

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Abstract

We present a theoretical and experimental study of a target-in-the-loop (TIL) high-power adaptive phase-locked fiber laser array. The system configuration of the TIL adaptive phase-locked fiber laser array is introduced, and the fundamental theory for TIL based on the single-dithering technique is deduced for the first time. Two 10-W-level high-power fiber amplifiers are set up and adaptive phase locking of the two fiber amplifiers is accomplished successfully by implementing a single-dithering algorithm on a signal processor. The experimental results demonstrate that the optical phase noise for each beam channel can be effectively compensated by the TIL adaptive optics system under high-power applications and the fringe contrast on a remotely located extended target is advanced from 12% to 74% for the two 10-W-level fiber amplifiers.

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Authors and Affiliations

  1. College of Optoelectric Science and Engineering, National University of Defense Technology, Changsha, 410073, China

    R. Tao, Y. Ma, L. Si, X. Dong, P. Zhou & Z. Liu

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  1. R. Tao
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  2. Y. Ma
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  3. L. Si
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  4. X. Dong
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  5. P. Zhou
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  6. Z. Liu
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Correspondence to P. Zhou.

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Tao, R., Ma, Y., Si, L. et al. Target-in-the-loop high-power adaptive phase-locked fiber laser array using single-frequency dithering technique. Appl. Phys. B 105, 285–291 (2011). https://doi.org/10.1007/s00340-011-4692-z

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  • DOI: https://doi.org/10.1007/s00340-011-4692-z

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