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非线性晶体三波互作用允许参量的修正计算
引用本文:王杰,姚建铨,李喜福,于意仲,施翔春.非线性晶体三波互作用允许参量的修正计算[J].光学学报,2001,21(2):39-141.
作者姓名:王杰  姚建铨  李喜福  于意仲  施翔春
作者单位:天津大学精密仪器与光电子工程学院,
基金项目:国家自然科学基金高技术探索主题! (6 99880 0 3),博士后基金,激光技术国家重点实验室资助项目
摘    要:采用传统级数展开方法计算晶体非线性三波互作用的允许参量,利用定义通过计算机数值模拟进行了精确计算,修正了传统计算结果,发现晶体在产生二次谐波时,在某些角度存在很宽的允许波长峰,超过传统文献值约几十倍。研究表明,在产生二次谐波时,10mm长的晶体在某些波段获得100mm以上的允许倍频带宽是可能的,并提出了移动这些宽带的方法。

关 键 词:三波互作用  允许参量  超宽允许波长带  非线性晶体  数值计算  频率变换

Amendatory Calculation of the Acceptance Parameters in Three-Wave Interactions
Wang Jie,Yao Jianquan,Li Xifu,Yu Yizhong,SHI Xiangchun.Amendatory Calculation of the Acceptance Parameters in Three-Wave Interactions[J].Acta Optica Sinica,2001,21(2):39-141.
Authors:Wang Jie  Yao Jianquan  Li Xifu  Yu Yizhong  SHI Xiangchun
Abstract:The traditional method of calculation for the acceptance parameters by Taylor expansion in three wave interactions is only suitable for the condition of small acceptance parameters. The accurate calculation method of the acceptance parameters by means of definition is given. Through numerical calculation some values of acceptance parameters are corrected, and some super wide acceptance wavelength bands of SHG in nonlinear crystals are found, which are almost tens times larger than that calculated by traditional method. It suggests the possibility of obtaining super acceptance spectral bands in 1 cm long crystal for SHG.
Keywords:three wave interactions  acceptance parameters  super wide acceptance spectral band
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