| KTP光学参量振荡器输出激光的空间模式和光束质量 |
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| 引用本文： | 姚宝权,王月珠,柳强,王骐.KTP光学参量振荡器输出激光的空间模式和光束质量[J].中国激光,2001,28(8):693-697. |
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| 作者姓名： | 姚宝权 王月珠 柳强 王骐 |
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| 作者单位： | 哈尔滨工业大学光电子技术研究所可调谐激光技术国家级重点实验室!哈尔滨150001(姚宝权，王月珠，柳强)，哈尔滨工业大学光电子技术研究所可 (王骐) |
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| 摘 要： | 理论上通过二维傅里叶变换求解耦合波方程 ,分析了KTP光学参量振荡器 (OPO)信号光的空间分布 ;实验上利用Nd∶YAG倍频激光 ( 5 3 2nm)抽运非临界 (θ =90°,φ=0°) 及临界相位匹配KTP (θ =62 7°,φ=0°) OPO ,测量了参量光的空间分布、远场发散角及M2 因子等参数 ,讨论了抽运功率、谐振腔长、残余光后向二次抽运对OPO参量光的发散角和光束质量因子M2 的影响。
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| 关 键 词： | 光学参量振荡器 质量因子M2 相位匹配 |
| 收稿时间： | 2000/1/31 |
Study of the Spatial Beam Quality of KTP Optical Parametric Oscillator |
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| YAO Bao,quan,WANG Yue,zhu,LIU Qiang,WANG Qi.Study of the Spatial Beam Quality of KTP Optical Parametric Oscillator[J].Chinese Journal of Lasers,2001,28(8):693-697. |
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| Authors: | YAO Bao quan WANG Yue zhu LIU Qiang WANG Qi |
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| Abstract: | The beam quality factor of parametric light from KTP optical parametric oscillator pumped by a doubling frequency Nd∶YAG laser (532 nm) was measured by means of laser beam analyzer. The beam quality dependence of different pumping conditions is discussed such as pump power, pump beam diameter, OPO cavity length, phase matching mode, and pumping with or without reflection. In the theoretical analysis, double refractive walk off term is introduced into coupling wave equations which are numerically solved with light propagation method and Rungue Kutta algorithm. The molding results agree well with the observed OPO performance. |
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| Keywords: | optical parametric oscillator beam quality M 2 phase matching |
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