摘要
分析不同条件下二次谐波产生中的光束离散对于提高转换效率和光束质量都十分重要。通过建立求解双轴晶体中双折射问题的数值分析模型,可以精确计算晶体主轴任意取向下光从任意方向入射时折射光的折射率、偏振态、波矢方向及能流方向等。详细讨论了正入射和斜入射、Ⅰ类相位匹配和Ⅱ类相位匹配下KTP晶体和LBO晶体中的光束离散问题。
It is important that ray separation in second harmonic generation is carefully analyzed for different conditions to improve conversion efficiency and light quality. Numerical calculation model for birefringence in biaxial crystals is introduced, which can be applied to calculating refractive index, polarization direction, wave vector, Poynting vector of refracted wave for any direction of incidence and any orientation of major axes. The ray separations are discussed for two type phase matching and different conditions of incidence in KTP and LBO crystals.
出处
《光学仪器》
2005年第5期77-81,共5页
Optical Instruments
基金
浙江省自然科学基金资助项目(102018)
关键词
双轴晶体
双折射
非线性
二次谐波产生
biaxial crystal
birefringence
nonlinearity
second harmonic generation
