| High power 1.57-μm OPO pumped by MOPA with SBS |
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| 引用本文： | 鞠有伦,姚宝权,戚盛.High power 1.57-μm OPO pumped by MOPA with SBS[J].Chinese Optics Letters,2005(6). |
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| 作者姓名： | 鞠有伦 姚宝权 戚盛 |
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| 作者单位： | Institute of Optoelectronics Harbin Institute of Technology，Harbin 150001，Institute of Optoelectronics Harbin Institute of Technology，Harbin 150001，Institute of Optoelectronics Harbin Institute of Technology，Harbin 150001 |
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| 基金项目： | This work was supported by the National Key Laboratory Foundation (No. 51402010301ZS62010), and Harbin Institute of Technology Science Foundation (No. HIT.2001.02). |
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| 摘 要： | A Nd:YAG master oscillator power amplifier (MOPA) system, pumped by a pulse flash-lamps as the pump source of optical parametric oscillator (OPO), is employed to improve the pump beam quality of OPO pump source. A back amplifying configuration with stimulated Brillouin scattering (SBS) phase conjugation mirror is used. OPO pump laser energy of 611 mJ/pulse with 30-ns pulse duration is obtained, and near diffraction limited beam quality is achieved. Based on the type Ⅱdegenerate non-critically phase-matched KTP crystal, the OPO is used to convert pump beam from 1.064 μm to 1.57 μm, eye-safe near infrared laser range source. 1.57-μm output energy of 209 mJ/pulse with 18-ns pulse duration is attained with a short cavity KTP OPO, when pump laser energy is approximately 611 mJ. OPO conversion efficiency is up to 38.7% when pump laser energy is approximately 200 mJ.
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