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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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