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晶体球法直接测量KTP晶体第Ⅰ类相位匹配曲线
引用本文:阎江,谢绳武,李浩文,杨学林,夏宇兴.晶体球法直接测量KTP晶体第Ⅰ类相位匹配曲线[J].光学学报,2001,21(2):34-138.
作者姓名:阎江  谢绳武  李浩文  杨学林  夏宇兴
作者单位:上海交通大学应用物理系,
基金项目:上海市自然科学基金,国家教委博士点基金资助项目
摘    要:报道了35ps激光脉冲射入直径为10mm KTP昌体球的第Ⅰ类相位匹配二次谐波产生实验,根据二次谐波产生转换效率直接测量了KTP晶体的第Ⅰ类相位匹配曲线及相应的有效非线性系数,并与6组色散方程给出的理论匹配曲线比较,指出Vanherzele的公式优于其他五组。

关 键 词:晶体球  二次谐波产生  色散方程  有效非线性系数  磷酸钛钾  KTP晶体  第Ⅰ类相位匹配曲线  测量

Direct Measurement of Type Ⅰ Phase-Matching Curve of KTP Crystal Using Sphere Method
Yan Jiang,Xie Shenwu,Li Haowen,Yang Xueling,Xia Yuxing.Direct Measurement of Type Ⅰ Phase-Matching Curve of KTP Crystal Using Sphere Method[J].Acta Optica Sinica,2001,21(2):34-138.
Authors:Yan Jiang  Xie Shenwu  Li Haowen  Yang Xueling  Xia Yuxing
Abstract:Phase-matched type Ⅰ second-harmonic generation in a 10 mm KTP crystal sphere using a 35 picosecond pulse as pump laser is reported. The type Ⅰ phase-matching (PM)curve of KTP crystal is measured directly according to the SHG conversion efficiency, and the corresponding nonlinear optical coefficient is calculated. By comparison of the experimental PM curve with the theoretical PM curves calculated from six Sellmeier’s equations, it is found that the equation given by Vanherzeele is the best one.
Keywords:crystal sphere  second  harmonic generation  effective nonlinear optical coefficient
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