20 September 2016 Adaptive compensation of a direct liquid-cooled solid-state MOPA system
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Abstract
Direct liquid-cooling is a promising way of power scaling and heat management for solid-state lasers. A side-pumped direct liquid-cooled solid-state pulsed zigzag MOPA system is established based on this advanced concept. However, its beam quality is degraded by the thermal distortions in the non-zigzag direction and the flowing coolant. We develop an adaptive optics system to improve its beam quality, which primarily includes a low-order aberration compensator and a 59-actuator deformable mirror. The beam is first corrected by the low-order aberration compensator to remove large defocus and astigmatism, and its size is reshaped simultaneously to fulfill the demands of applications. Then the beam is further corrected by the deformable mirror. With collaborative operation of the low-order aberration compensator and the deformable mirror, we have achieved average beam quality of β=2.8.
Conference Presentation
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Lizhi Dong, Shanqiu Chen, Xiaojun Chen, Wenjin Liu, Ke Hu, Boheng Lai, Ping Yang, Shuai Wang, Xing He, Bing Xu, Le Liu, Yang Liu, Zhe Wang, Gang Wang, "Adaptive compensation of a direct liquid-cooled solid-state MOPA system", Proc. SPIE 9982, Unconventional Imaging and Wavefront Sensing XII, 99820H (20 September 2016); doi: 10.1117/12.2236823; https://doi.org/10.1117/12.2236823
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