Chinese Optics Letters, 2019, 17 (5): 051403, Published Online: May. 13, 2019   

1.57 times diffraction-limit high-energy laser based on a Nd:YAG slab amplifier and an adaptive optics system Download: 1541次Cover Paper

Author Affiliations
1 Center for Photonics and Electronics, Department of Precision Instruments, Tsinghua University, Beijing 100084, China
2 Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
Abstract
In this Letter, a 116-actuator deformable mirror (DM) was used to correct the wavefront distortion in a 10.7 J, 10 Hz neodymium-doped yttrium aluminum garnet (Nd:YAG) slab amplifier. By applying a pump-light homogenizer to transform the 3 × 1 near-field beam array into an integrated beam, the beam quality was greatly improved from 5.54 times diffraction limit (TDL) to 1.57 TDL after being corrected by the DM. To the best of our knowledge, this is the first investigation on beam quality control of an arrayed near-field beam in high-energy diode-pumped solid-state lasers.

Licheng Sun, Tinghao Liu, Xing Fu, Yading Guo, Xiaojun Wang, Chongfeng Shao, Yamin Zheng, Chuang Sun, Shibing Lin, Lei Huang. 1.57 times diffraction-limit high-energy laser based on a Nd:YAG slab amplifier and an adaptive optics system[J]. Chinese Optics Letters, 2019, 17(5): 051403.

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