| 高功率KTP晶体光参量振荡器热效应 |
| |
| 引用本文： | 邵婷, 冯国英, 魏泳涛, 等. 高功率KTP晶体光参量振荡器热效应[J]. 强激光与粒子束, 2010, 22(09). |
| |
| 作者姓名： | 邵婷 冯国英 魏泳涛 阴明 李玮 |
| |
| 作者单位： | 1.四川大学 电子信息学院, 成都 61 0064;;;2.四川大学 建筑与环境学院, 成都 61 0064 |
| |
| 摘 要： | 采用有限元分析方法对KTP晶体内部3维温度分布情况进行了精确计算。根据参量过程满足的能量守恒条件和动量守恒条件，利用KTP晶体的热光色散方程计算了参量过程中温度对相位匹配角、光波走离角、允许角及晶体的有效非线性系数的影响。结果表明：晶体内温度分布不均匀；在沿着通光方向上晶体截面温度分布不同；加强晶体表面冷却效果，可有效降低温度对相位匹配角、光波走离角、允许角及晶体的有效非线性系数的影响。
|
| 关 键 词： | 非线性光学 有限元分析方法 KTP晶体 光参量振荡器 热效应 |
Thermal effect of high-power KTP crystal optical parametric oscillator |
| |
| shao ting, feng guoying, wei yongtao, et al. Thermal effect of high-power KTP crystal optical parametric oscillator[J]. High Power Laser and Particle Beams, 2010, 22. |
| |
| Authors: | shao ting feng guoying wei yongtao yin ming li wei |
| |
| Affiliation: | 1. School of Electronics and Information Engineering,Sichuan University,Chengdu 610064,China;;;2. College of Architecture and Environment,Sichuan University,Chengdu 610064,China |
| |
| Abstract: | The temperature distribution inside KTP crystal was calculated by finite element analysis accurately. The phase matching angles, walk-off angles, tolerance angles and effective nonlinear coefficient of type Ⅱ KTP crystal were calculated according to the conservation of mass and phase matched for parametric process and the thermo-optic dispersion of KTP crystal. The results showed that the distribution of temperature inside the crystal was non-uniform. Along the direction of light, temperature distributions of crystal sections were different. Strengthening the cooling effect of crystal can effectively reduce the temperature influences on the phase matching angles, walk-off angles, tolerance angles and effective nonlinear coefficient of crystal． |
| |
| Keywords: | nonlinear optics finite element method ktp crystal optical parametric oscillator thermal effect |
|
| 点击此处可从《强激光与粒子束》浏览原始摘要信息 |
|
点击此处可从《强激光与粒子束》下载全文 |
|
