• Chinese Journal of Lasers
  • Vol. 46, Issue 8, 0801001 (2019)
Xun Wang1、2、3, Boheng Lai1、2, Lizhi Dong1、2、**, Ping Yang1、2、*, Shanqiu Chen1、2, Shuai Wang1、2, and Bing Xu1、2
Author Affiliations
  • 1 Key Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu, Sichuan 610209, China
  • 2 Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, Sichuan 610209, China
  • 3 University of Chinese Academy of Sciences, Beijing 100049, China
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    DOI: 10.3788/CJL201946.0801001 Cite this Article Set citation alerts
    Xun Wang, Boheng Lai, Lizhi Dong, Ping Yang, Shanqiu Chen, Shuai Wang, Bing Xu. Intra-Cavity Aberration Compensation in 100 W-Order Unstable Ring Slab Lasers[J]. Chinese Journal of Lasers, 2019, 46(8): 0801001 Copy Citation Text show less

    Abstract

    We propose an unstable ring resonator to transform the nonconjugation correction of intra-cavity aberrations in the traditional standing-wave unstable resonator into conjugation compensation. A 100 W-order Nd∶YAG slab laser with the unstable ring resonator is constructed, with a 59-element adaptive optics system compensating the intra-cavity aberrations. A 980 nm reference beam and a Shack-Hartmann wave-front sensor are employed to measure the intra-cavity aberrations. Then the weighted least square method is applied to reconstruct the aberrations. The tip/tilt mirror and deformable mirror are used to correct the aberrations. With the aberrations compensated by an adaptive optics system, the output power increases from 105.8 W to 113.1 W and the beam quality factor improves from 6.98 to 2.33 under a relatively low pump power. The study provides a technical approach for high power solid-state unstable ring lasers to achieve high beam quality.
    Xun Wang, Boheng Lai, Lizhi Dong, Ping Yang, Shanqiu Chen, Shuai Wang, Bing Xu. Intra-Cavity Aberration Compensation in 100 W-Order Unstable Ring Slab Lasers[J]. Chinese Journal of Lasers, 2019, 46(8): 0801001
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