| High-efficiency 1598.5-nm third Stokes Raman laser based on barium nitrate crystal |
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| 作者姓名： | 陈慧挺 楼祺洪 董景星 陈万春 |
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| 作者单位： | Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences，Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences，Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences，Institute of Physics Chinese Academy of Sciences Shanghai 201800 Graduate School of the Chinese Academy of Sciences Beijing 100039，Shanghai 201800，Shanghai 201800，Beijing 100080 |
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| 基金项目： | This work was supported by the National High Technology Project (No. 2004AA846020) and the National Natural Science Foundation of China (No. 10334110). |
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| 摘 要： | A high-efficiency eye-safe Raman laser was demonstrated by use of the third Stokes radiation in a Ba(NO_3)_2 crystal pumped by a 1064-nm Nd:YAG laser. The output wavelength of the Raman laser was 1598.5 nm with a full-width at half-maximum (FWHM) of 1.5 nm. With an incident pump energy of 140 mJ, a maximum of 18-mJ Raman output energy was generated at a repetition rate of 30 Hz, corresponding to an optical-to-optical conversion efficiency of 12.9%. The Raman pulse duration was shortened to 2.9 ns compared with that of the pump pulse of 19.3 ns. The eye-safe solid-state Raman laser is expected to have wide applications in range-finding, telemetry, laser radar, and other aspects.
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