The beam qualities of high power solid-state slab lasers are severely limited by many factors such as thermal effects of the gain medium. Simultaneously achieving high beam quality and high average power remains a fundamental problem in the development of high power lasers. Adaptive optics systems are able to significantly improve beam qualities by compensating for the static and dynamic phase distortions of the laser beams. In recent years, Institute of Optics and Electronics, Chinese Academy of Sciences has developed low-order aberration compensators, weighted least-square wavefront reconstruction algorithms, and generic real-time wavefront processors for solid-state slab lasers. Based on these key components, over two dozens of adaptive optics systems are delivered to a variety of solid-state slab laser systems in China for beam cleanup. With effective operations of these adaptive optics systems, the beam qualities of the laser systems have all been well improved.
Recent progress of adaptive beam cleanup of solid-state slab lasers in Institute of Optics and Electronics, Chinese Academy of Sciences
First published at:Mar 15, 2018
1 Li J M. Development, trend and application of high average power diode pumped lasers[J]. Laser & Optoelectronics Progress, 2008, 45(7): 16-29.
2 Zhou S H, Zhao H, Tang X J. High average power laser diode pumped solid-state laser[J]. Chinese Journal of Lasers, 2009, 36(7): 1605-1618.
3 Peng Q J, Xu Z Y. Relationship between beam quality and power for solid state laser with high average power[J]. High Power Lasers and Particle Beams, 2011, 23(7): 1707-1712.
4 Martin W S, Chernoch J P. Multiple internal reflection face-pumped laser: U. S. Patent 3633126[P]. 1972-01-04.
5 Machan J P, Long W H, Jr Zamel J, et al. 5. 4 kW diode-pumped, 2. 4x diffraction-limited Nd: YAG laser for material processing[C]//Advanced Solid State Laser 2002, 2002.
6 Nishikawa Y. Slab-shaped 10-kW all-solid-state laser[J]. The Review of Laser Engineering, 2003, 31(8): 513-518. DOI:10.2184/lsj.31.513
7 Redmond S, McNaught S, Zamel J, et al. 15 kW near-diffraction-limited single-frequency Nd: YAG laser[C]// Proceedings of Conference on Lasers and Electro-Optics, 2007.
8 Textron defense systems achieves more than 100 kilowatts with J-HPSSL high-power laser[EB/OL]. (2010-02-18). http://www.defense-aerospace.com/articles-view/release/3/112461/textron-laser-achieves-over-100-kilowatts.html.
9 Klimek D E, Mandl A. Nd: YAG ceramic ThinZag® high-power laser development[M]//Injeyan H, Goodno G D. High-Power Laser Handbook. New York: McGraw-Hill, 2011.
10 Wang C, Tang X J, Xu L J, et al. Investigation on thermal effect of high power slab laser with 11 kW[J]. Chinese Journal of Lasers, 2010, 37(11): 2807-2809.
11 Chen Z Z, Xu Y T, Guo Y D, et al. 8.2 kW high beam quality quasi-continuous-wave face-pumped Nd:YAG slab amplifier[J]. Applied Optics, 2015, 54(16): 5011-5015. DOI:10.1364/AO.54.005011
12 Fan Z W, Qiu J S, Kang Z J, et al. High beam quality 5 J, 200 Hz Nd:YAG laser system[J]. Light: Science & Applications, 2017, 6: e17004.
13 Tang B, Zhou T J, Wang D, et al. Optical distortions in end-pumped zigzag slab lasers[J]. Applied Optics, 2015, 54(10): 2693-2702. DOI:10.1364/AO.54.002693
14 Yu X, Dong L Z, Lai B H, et al. Adaptive aberration correction of a 5 J/6.6 ns/200 Hz solid-state Nd:YAG laser[J]. Optics Letters, 2017, 42(14): 2730-2733. DOI:10.1364/OL.42.002730
15 Yu X, Dong L Z, Lai B H, et al. Automatic low-order aberration correction based on geometrical optics for slab lasers[J]. Applied Optics, 2017, 56(6): 1730-1739. DOI:10.1364/AO.56.001730
16 Jiang W H, Li H G. Hartmann-shack wavefront sensing and wavefront control algorithm[J]. Proceedings of SPIE, 1990, 1271: 82-93. DOI:10.1117/12.20396
17 Chen S Q, Dong L Z, Chen X J, et al. Adaptive slab laser beam quality improvement using a weighted least-squares reconstruction algorithm[J]. Applied Optics, 2016, 55(11): 3077-3083. DOI:10.1364/AO.55.003077
18 Chen S Q, Zhao E Y, Xu B, et al. A compact Multi-core CPU based adaptive optics real-time controller[J]. Proceedings of SPIE, 2014, 9280: 928012. DOI:10.1117/12.2068322
19 Wang Z, Liu Y, Liu L, et al. Laser diode side-pumped Nd:YAG thin slab laser based on MOPA[J]. Laser & Infrared, 2015, 45(4): 364-368.
20 Dong L Z, Chen S Q, Chen X J, et al. Adaptive compensation of a direct liquid-cooled solid-state MOPA system[J]. Proceedings of SPIE, 2015, 9982: 99820H.
Supported by National Key Scientific Equipment Development Project of China (ZDYZ2013-2), National Natural Sci-ence Foundation of China (11704382) and Youth Innovation Promotion Association of Chinese Academy of Sciences
Get Citation: Dong Lizhi, Xu Bing, Yang Ping, et al. Recent progress of adaptive beam cleanup of solid-state slab lasers in Institute of Optics and Electronics, Chinese Academy of Sciences[J]. Opto-Electronic Engineering, 2018, 45(3): 170539.
Previous: Development of solar adaptive optics