| 外腔式宽调谐被动调QNd:YVO_4/PPMgLN光学参量振荡器 |
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| 引用本文： | 林洪沂,苗杰光,檀慧明,苏少昌,崔铁成,郭劲.外腔式宽调谐被动调QNd:YVO_4/PPMgLN光学参量振荡器[J].强激光与粒子束,2010,22(1). |
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| 作者姓名： | 林洪沂 苗杰光 檀慧明 苏少昌 崔铁成 郭劲 |
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| 作者单位： | 1. 中国科学院 长春光学精密机械与物理研究所, 长春 130033；2. 中国科学院 研究生院, 北京 100049；3. 哈尔滨工业大学威海 光电科学系, 山东 威海 264209；4. 中国白城63861部队, 吉林 白城 137000 |
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| 基金项目： | 吉林省科技发展计划项目 |
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| 摘 要： | 报道了一个低阈值宽调谐、被动调Q、单谐振掺MgO的周期性极化铌酸锂晶体(PPMgLN)光学参量振荡器。利用被动调Q的Nd:YVO4激光器作为泵浦源,采用外腔结构,在室温下,实现了PPMgLN晶体的准相位匹配光学参量振荡。光参量振荡的阈值仅为0.27W(单脉冲能量4.5μJ、脉宽35ns);在泵浦光为1.35W(脉冲能量8.2μJ、脉宽35ns),PPMgLN周期为31μm时,获得了161.9mW,3.202μm脉冲激光输出;同时获得了98.5mW的1.594μm信号光输出,总的光光转化效率达到19.3%。通过改变晶体的周期,实现了闲频光3.13～4.19μm,信号光1.43～1.65μm的宽带可调谐激光输出。
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| 关 键 词： | 非线性光学 光学参量振荡器 被动调Q PPMgLN 可调谐 |
| 收稿时间： | 1900-01-01; |
Extra-cavity,wide-tunable,passively Q-switched Nd:YVO_4/PPMgLN optical parametric oscillator |
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| Lin Hongyi,Miao Jieguang,Tan Huiming,Su Shaochang,Cui Tiecheng,Guo Jin.Extra-cavity,wide-tunable,passively Q-switched Nd:YVO_4/PPMgLN optical parametric oscillator[J].High Power Laser and Particle Beams,2010,22(1). |
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| Authors: | Lin Hongyi Miao Jieguang Tan Huiming Su Shaochang Cui Tiecheng Guo Jin |
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| Institution: | 1. Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China;2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China;3. Department of Optoelectronic Science, Harbin Institute of Technology, Weihai 264209, China;4. 63861 Armed Forces of Chinese Baicheng, Baicheng 137000, China |
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| Abstract: | A wide-tunable, low-threshold, extra-cavity singly resonant optical parametric oscillator(OPO) has been reported, which is based on periodically poled MgO:LiNbO_3 (PPMgLN). The OPO system, compact and simple, adopts a passively Q-switched Nd:YVO_4 laser as the pump source and realizes quasi-phase-matched optical parametric oscillation at room temperature. The threshold value of the OPO system is only 0.27 W (single pulse energy of 4.5 μJ, pulse duration of 35 ns) at 1 064 nm. When the pump power is 1.35 W (pulse energy of 8.2 μJ, pulse duration of 35 ns), an idler output power of 161.9 mW at 3.202 μm, and a signal output power of 98.5 mW at 1.594 μm have been achieved, and this corresponds to a whole (idler+signal) optic-optic conversion efficiency of 19.3%. By shifting the PPMgLN crystal, the periods of the domain structure on the PPMgLN wafer can be changed, thus enabling a wide idler spectral tuning range from 3.13 to 4.19 μm, and a wide signal spectral tuning range from 1.65 to 1.43 μm. |
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| Keywords: | PPMgLN nonlinear optics optical parametric oscillator passively Q-switched PPMgLN tunable |
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