As a typical representative of multi-beam coherent synthesis, fiber laser array technology has also been continuously developed. In the future, fiber laser array technology needs to face the challenge of long-distance transmission applications under actual atmospheric turbulence, correcting the full-range aberrations in the optical transmission of fiber laser arrays, but the wavefront sensing has been maturely applied in traditional adaptive optics systems. The method cannot be directly applied to the fiber laser coherent synthesis system, so it is necessary to develop a new wavefront sensor that can be closely integrated with the fiber laser array.
Recently, Li Xinyang, a researcher at the Institute of Optoelectronic Technology, Institute of Optoelectronic Technology, Chinese Academy of Sciences, proposed a fiber-optic laser array aberration detection method based on fiber coupling. The method uses numerical simulation to simulate the process of recovering turbulence aberrations. Experiment with a 7-element adaptive fiber collimator (AFOC) array to recover static aberrations.
The simulation results show that the proposed method can effectively recover the turbulent distortion wavefront, and there are different optimal restoration orders for the hexagonal arrays with different unit numbers. This technology is expected to be further applied in systems such as laser array atmospheric transmission and turbulence correction.
Relevant research results have been published in "Photoelectric Engineering".
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