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Tunable picometer-linewidth 972.26 nm laser generation from a volume-Bragg-grating-based BBO optical parametric oscillator

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【Author】 Yaqi Wang;Fei Du;Tingting Lu;Junxuan Zhang;Jian Ma;Haoda Ma;Xiaolei Zhu;Weibiao Chen;Aerospace Laser Technology and System Department, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences;Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences;Wangzhijiang Innovation Center for Laser;

【通讯作者】陆婷婷;张俊旋;

【机构】 Aerospace Laser Technology and System Department, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences； Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences； Wangzhijiang Innovation Center for Laser；

【摘要】 A narrow-linewidth 972.26 nm laser with a 4.5 pm spectral linewidth was generated from a BBO optical parametric oscillator using a volume Bragg grating as the cavity end mirror, pumped by a 532.23 nm single-longitudinal-mode laser at a 1 kHz repetition rate. The system achieved 0.94 W maximum output power with <2.4 ns pulse duration, yielding 23.5% signal conversion efficiency. Extracavity second-harmonic generation produced 0.41 W of 486.13 nm blue light with a 2.0 pm linewidth and 43.6% conversion efficiency. The wavelength could be tuned over 0.4 nm by varying the grating temperature between 12.6°C and 52.6°C.更多还原

【Abstract】 A narrow-linewidth 972.26 nm laser with a 4.5 pm spectral linewidth was generated from a BBO optical parametric oscillator using a volume Bragg grating as the cavity end mirror, pumped by a 532.23 nm single-longitudinal-mode laser at a 1 kHz repetition rate. The system achieved 0.94 W maximum output power with <2.4 ns pulse duration, yielding 23.5% signal conversion efficiency. Extracavity second-harmonic generation produced 0.41 W of 486.13 nm blue light with a 2.0 pm linewidth and 43.6% conversion efficiency. The wavelength could be tuned over 0.4 nm by varying the grating temperature between 12.6°C and 52.6°C.更多还原

【关键词】 optical parametric oscillator； wavelength tuning； narrow linewidth； blue laser； kHz repetition rate；
【Key words】 optical parametric oscillator； wavelength tuning； narrow linewidth； blue laser； kHz repetition rate；

【基金】 supported by the National Key Research and Development Program of China (No.2022YFB3901700);the National Natural Science Foundation of China (No. 62205358)

【文献出处】 Chinese Optics Letters ,中国光学快报(英文版) , 编辑部邮箱 ,2026年01期

【分类号】TN248

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