Authors:
Feng Li
1
;
Xinyang Li
1
;
Chao Geng
1
;
Guan Huang
2
and
Yan Yang
2
Affiliations:
1
Chinese Academy of Sciences, China
;
2
Chinese Academy of Sciences and University of Chinese Academy of Sciences, China
Keyword(s):
Multi-aperture Laser Transceiving, Beam Combining, Adaptive Fiber Coupling.
Related
Ontology
Subjects/Areas/Topics:
Fiber Lasers and Applications
;
Lasers
;
Photonics, Optics and Laser Technology
Abstract:
Nowadays, the development of fiber laser beam combining faces new challenges during propagating through the real long-range atmosphere. Aberrations in such transmission systems include turbulence-induced dynamic aberrations located at the path from the fiber laser array to the target, besides the inherent phase errors like phase noises and tip/tilt errors. Existing techniques, e.g., target-in-the-loop and delayed stochastic parallel gradient descent, are difficult to deal with the fast-changing turbulence-induced tip/tilt aberrations. But correcting these aberrations is critical for obtaining combined laser beams on the target with the best beam quality. In this paper, research progress of multi-aperture laser transceiving control for beam combining applications in IOE, CAS is presented. These novel techniques presented here provide efficient ways to achieve tip/tilt control for the beam coupling from space to fiber and the outgoing laser beams in the beam combining applications.