Research on the wavefront control technology of ICF laser device

Xiaolu Zhang; Song Gao; Qiao Xue; Dandan Zhou; Fa Zeng

doi:10.1117/12.2657525

16 December 2022 Research on the wavefront control technology of ICF laser device

Xiaolu Zhang, Song Gao, Qiao Xue, Dandan Zhou, Fa Zeng

Proceedings Volume 12501, Seventeenth National Conference on Laser Technology and Optoelectronics; 125011M (2022) https://doi.org/10.1117/12.2657525
Event: Seventeenth National Conference on Laser Technology and Optoelectronics, 2022, Shanghai, China

Abstract

Wavefront distortion is an important limiting factor for improving the output performance of high-power laser devices. It is an effective way to control the wavefront distortion via adaptive optics (AO) wavefront control technology. In the present paper, the research of wavefront control technology based on laser device is carried out, along with the feasibility and effectiveness of wavefront control technology are also verified. The functionality and reliability of major hardware components, such as the high-voltage power supply modules, the communication modules and the piezoelectric drivers, have all passed the offline test. The online test results show that the wavefront distortions for each of eight beam lines in the laser device has been corrected by the deformable mirrors installed in the main amplifier and the final optical assembly (FOA). Focal spot measurement shows a significant improvement in the focusing performance, with 95% of the frequency-tripled laser energy encircled in 30 times diffraction limit (DL). It is proved that the wavefront control technology can degread wavefront distortion generated from laser translating, and ensure a smooth beam transmission and a high output beam quality for the high-power laser devices.

Citation Download Citation

Xiaolu Zhang, Song Gao, Qiao Xue, Dandan Zhou, and Fa Zeng "Research on the wavefront control technology of ICF laser device", Proc. SPIE 12501, Seventeenth National Conference on Laser Technology and Optoelectronics, 125011M (16 December 2022); https://doi.org/10.1117/12.2657525

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KEYWORDS

Wavefronts

Wavefront distortions

Control systems

Laser applications

Deformable mirrors

Optical amplifiers

Reliability

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