Applied Physics B

, 105:285

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

Article

DOI: 10.1007/s00340-011-4692-z

Cite this article as:
Tao, R., Ma, Y., Si, L. et al. Appl. Phys. B (2011) 105: 285. doi:10.1007/s00340-011-4692-z

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.

Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • R. Tao
    • 1
  • Y. Ma
    • 1
  • L. Si
    • 1
  • X. Dong
    • 1
  • P. Zhou
    • 1
  • Z. Liu
    • 1
  1. 1.College of Optoelectric Science and EngineeringNational University of Defense TechnologyChangshaChina