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激光陶瓷的出现,为固体激光材料向高功率、大尺寸、多功能发展提供了全新的途径,从而为激光技术的发展提供了更加灵活广阔的设计空间。介绍了近年来国际国内透明激光陶瓷及陶瓷激光器发展的最新进展,并展望了陶瓷激光器的未来发展价值。高功率陶瓷激光器方面:中科院上海光学精密机械研究所采用超均匀侧面泵浦技术在1at.%Nd:YAG陶瓷棒中获得输出功率236W,斜率效率62%的连续激光输出。美国利弗莫尔实验室采用Sm3+包边Nd:YAG复合结构陶瓷热容激光器实现了5Hz,67kW激光输出。陶瓷激光器方面,日本World-Labo.Co实验室采用掺杂浓度为15at.%的Yb:YSAG透明陶瓷,获得脉冲宽度280fs,平均输出能量为62mW的锁模脉冲激光输出。陶瓷自调Q脉冲激光器和陶瓷光纤激光器亦有很大进展。陶瓷激光器的开发和应用不仅延伸到传统固体激光器的各个研究领域,并且能够不断突破现有固体激光技术的局限,有望推动未来固体激光工程向更广阔的空间发展。
The emergence of laser ceramics provides a new way for the development of high-power, large-size and multi-functional solid-state laser materials, which provides a more flexible and broad design space for the development of laser technology. In this paper, the recent developments of the international and domestic transparent laser ceramics and ceramic lasers are introduced, and the future development of the ceramic lasers is forecasted. High-power ceramic laser: The Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, adopts the uniform uniform side-pumping technique to obtain a continuous laser output with a output power of 236W and a slope efficiency of 62% in a 1at.% Nd: YAG ceramic rod. The United States Livermore laboratory using Sm3 + edging Nd: YAG composite structure of ceramic heat capacity laser to achieve a 5Hz, 67kW laser output. In terms of ceramic lasers, the World-Lab. Co. laboratory in Japan used a Yb: YSAG transparent ceramic with a doping concentration of 15 at.% To obtain a mode-locked pulsed laser output with a pulse width of 280 fs and an average output energy of 62 mW. Ceramic self-tuning Q-pulse lasers and ceramic fiber lasers have also made great progress. The development and application of ceramic lasers not only extend to all the research fields of traditional solid-state lasers, but also continue to break through the limitations of existing solid-state lasers, and are expected to promote the development of solid-state laser projects in the future.