全固态窄线宽钠导星激光器

鲁燕华; 刘东; 张雷; 马毅; 唐淳; 王卫民

中国激光, 2009, 36 (7): 1848, 网络出版: 2009-07-16

全固态窄线宽钠导星激光器

All-Solid-State Narrow Linewidth Sodium Guide Star Laser

论文大纲

鲁燕华 ^*刘东张雷马毅唐淳王卫民

作者单位

中国工程物理研究院应用电子学研究所, 四川绵阳 621900

激光器钠导星和频线宽标准具 lasers sodium guide star sum-frenquency generation linewidth etalon

摘要

研制了一台重复频率400 Hz, 平均功率1.0 W的激光二极管抽运全固态窄线宽钠导星激光器。利用两路波长分别为1064 nm和1319 nm的声光(AO)调Q激光器作为基频光, 在腔外通过三硼酸锂(LBO)晶体和频产生(SFG)589 nm钠导星激光, 和频效率约达20％。每路基频光均采用标准具压窄线宽, 输出和频光线宽约1.8 GHz, 并调节控制标准具的温度和倾斜角度将中心波长锁定于589.159 nm(偏差±1 pm), 实现了激光器谱线与钠原子D2线的精确匹配。

Abstract

A laser diode-pumped all-solid-state narrow linewidth sodium guide star laser was developed. The repetition rate was 400 Hz and the average power was 1.0 W. Two acousto-optic (AO) Q-swithed lasers of 1064 nm and 1319 nm were used as basic-frequency lasers ,and then 589 nm sodium guide star laser was generated through a extra-cavity sum-frequency generation (SFG) lithium triborate (LBO) crystal. The efficiency of sum-frequency generation was about 20%. Each of the basic frequency lasers was adopted well-designed etalons to narrow the linewidth. The linewidth of the 589 nm laser was controlled to about 1.8 GHz. The central wavelength was locked to 589.159 nm(±1 pm) by tuning the temperature and angle of the etalons. In the end, the sodium guide star laser’s spectra was exactly matched to the D2 line of the sodium atoms.

参考文献

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鲁燕华, 刘东, 张雷, 马毅, 唐淳, 王卫民. 全固态窄线宽钠导星激光器[J]. 中国激光, 2009, 36(7): 1848. Lu Yanhua, Liu Dong, Zhang Lei, Ma Yi, Tang Chun, Wang Weimin. All-Solid-State Narrow Linewidth Sodium Guide Star Laser[J]. Chinese Journal of Lasers, 2009, 36(7): 1848.

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