| 纳秒近红外KTP光学参量振荡器的理论设计 |
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| 引用本文： | 苗杰光,檀慧明,边会坤. 纳秒近红外KTP光学参量振荡器的理论设计[J]. 光学精密工程, 2006, 14(3): 374-377 |
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| 作者姓名： | 苗杰光 檀慧明 边会坤 |
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| 作者单位： | 中国科学院,长春光学精密机械与物理研究所,吉林,长春,130033;中国科学院,研究生院,北京,100039;中国科学院,长春光学精密机械与物理研究所,吉林,长春,130033 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 对纳秒近红外KTP光学参量振荡器(KTP-OPO)进行了全面系统的理论设计。讨论了KTP-OPO的相位匹配,计算了KTP的走离角、允许角和有效非线性系数,数值模拟了角度调谐曲线和增益曲线,从而确定了调谐范围为1.35~2.0 μm,晶体切割角为59.6°。同时,分析了晶体长度、走离角以及输出镜耦合率对OPO阈值的影响,总结了降低参量阈值的几种方法。
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| 关 键 词： | 光学参量振荡器 近红外激光 KTP晶体 角度调谐 相位匹配 |
| 文章编号： | 1004-924X(2006)03-0374-04 |
| 收稿时间： | 2005-09-28 |
| 修稿时间： | 2006-01-10 |
Theoretical design of nanosecond near infrared KTP optical parametric oscillator |
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| MIAO Jie-guang,TAN Hui-ming,BIAN Hui-kun. Theoretical design of nanosecond near infrared KTP optical parametric oscillator[J]. Optics and Precision Engineering, 2006, 14(3): 374-377 |
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| Authors: | MIAO Jie-guang TAN Hui-ming BIAN Hui-kun |
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| Affiliation: | 1. Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China;
2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: | A general theoretical design of nanosecond near infrared KTP optical parametric oscillator was presented. Based on the calculation and discussion on the phase-matching, walk-off angle, acceptance angle and effective nonlinear coefficient for the KTP crystal, and on the numerical simulations of the angle-tuning curve and gain curve, the tuning spectrum and cutting angle of the KTP was finally established as 1.35 ~2.0 μm and 59.6°, respectively. At the same time, the impact of the crystal length, walk-off angle and the output coupler’s reflectivity on the threshold of a Optical Parametric Oscillator (OPO) was analyzed. Besides, several methods of reducing the OPO threshold were summed up. |
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| Keywords: | Optical Parametric Oscillator(OPO) near infrared laser KTP crystal angle-tuning phase-matching |
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