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A high-power dual-crystal Tm:YLF laser with 80.9% slope efficiency

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【Author】 Yinfei Liu;Jiajun Song;Yujie Peng;Guanguang Gao;Liya Shen;Junze Zhu;Tianze Xu;Yuxin Leng;State Key Laboratory of Ultra-intense laser Science and Technology, Shanghai Institute of Optics and Fine Mechanics (SIOM),Chinese Academy of Sciences (CAS);Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences;School of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study,University of Chinese Academy of Sciences;School of Physical Science and Technology, Shanghai Tech University;

【通讯作者】宋贾俊;彭宇杰;冷雨欣;

【机构】 State Key Laboratory of Ultra-intense laser Science and Technology, Shanghai Institute of Optics and Fine Mechanics (SIOM),Chinese Academy of Sciences (CAS)； Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences； School of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study,University of Chinese Academy of Sciences； School of Physical Science and Technology, ShanghaiTech University；

【摘要】 We demonstrate a high-power continuous-wave Tm:YLF laser with exceptional efficiency,achieved through laser diode end-pumping of dual Tm:YLF crystals in a thermally insensitive resonator at room temperature.The performance of the Tm:YLF laser system has been thoroughly investigated,covering output power,efficiency,power stability,and beam quality.A maximum output power of 45.85 W was achieved with an absorbed pump power of 60.89 W.The slope efficiency and absorbed-to-optical conversion efficiency were 80.9% and 75.3%,respectively.The laser exhibits excellent stability,with an RMS power stability of 0.33%.The beam quality(M~2) of the Tm:YLF laser in the horizontal and vertical directions were 1.01 and 1.05,respectively.This high-performance laser source is ideal for pumping holmium-doped crystals to generate 2-μm laser and mid-infrared laser generation via nonlinear optical processes.更多还原

【Abstract】 We demonstrate a high-power continuous-wave Tm:YLF laser with exceptional efficiency,achieved through laser diode end-pumping of dual Tm:YLF crystals in a thermally insensitive resonator at room temperature.The performance of the Tm:YLF laser system has been thoroughly investigated,covering output power,efficiency,power stability,and beam quality.A maximum output power of 45.85 W was achieved with an absorbed pump power of 60.89 W.The slope efficiency and absorbed-to-optical conversion efficiency were 80.9% and 75.3%,respectively.The laser exhibits excellent stability,with an RMS power stability of 0.33%.The beam quality(M~2) of the Tm:YLF laser in the horizontal and vertical directions were 1.01 and 1.05,respectively.This high-performance laser source is ideal for pumping holmium-doped crystals to generate 2-μm laser and mid-infrared laser generation via nonlinear optical processes.更多还原

【关键词】 Tm:YLF； 2-??m laser； high efficiency；
【Key words】 Tm:YLF； 2-??m laser； high efficiency；

【基金】 Project supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant Nos. XDA0380205 and XDB0890101);the National Key Research and Development Program of China (Grant No. 2022YFA1604400);the National Natural Science Foundation of China (Grant Nos. 12388102, 62205351, 61925507,62075227, 22227901, U21A20138, and 62375273);Shanghai Rising-Star Program (Grant No. 21QA1410200);the Fund from Youth Innovation Promotion Association of the Chinese Academy of Sciences (Grant No. 2020248);the Fund from Shanghai Association for Science and Technology (Grant Nos. 22DZ1100300, 22560780100, and 23560750200);China Postdoctoral Science Foundation (Grant No. GZC20232817);Shenzhen Major Scientific and Technological Projects(Grant No. KJZD20240903100205008)

【文献出处】 Chinese Physics B ,中国物理B , 编辑部邮箱 ,2026年03期

【分类号】TN248

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