Quadratic Nonlipear Optical Properties Studied by Reflected Second-Harmonic Ellipsometry

反射二次谐波椭圆光度法研究二次非唇形光学特性

• 批准号: 11305010
• 负责人: ITO Ryoichi
• 金额: $ 26.81万
• 依托单位: Meiji University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11305010/
• 关键词: nonlinear optics; quadratic nonlinear optical coefficients; absolute measurement; β-BaB_2O_4; CsLiB_6O_<10>; ZnSe; stoichiometric LiNbO_3; LiNbO_3; コングルエント; ストイキオメトリック; ZnSe; 赤外; BBo; CLBO; GaAs

The quadratic nonlinear optical coefficients of several important materials have been absolutely determined. The materials studied include β-BaB_2O_4, CsLiB_6O_<10>, ZnSe and LiNbO_3 . The measurement was made by the non-phase-matched second-harmonic-generation method using single-mode lasers as light sources. The nonlinear optical coefficients of β-BaB_2O_4 and CsLiB_6O_<10>, both important materials for ultraviolet coherent light sources, have been determined for visible to UV second-harmonic wavelengths for the first time. The nonlinear optical coefficients of ZnSe, which is a promising material for wavelength conversion over visible to IR wavelengths, have been determined at 1.3 and 1.5 μ/m . The nonlinear optical coefficients of stoichiometric LiNbO_3 have been found to be significantly larger than those of congruent LiNbO_3.

绝对测定了几种重要材料的二次非线性光学系数。所研究的材料包括β-BaB_2O_4、CsLiB_6O_(10)和LiNbO_3。以单模激光器为光源，采用非相位匹配二次谐波方法进行测量。首次测定了紫外相干光源的重要材料β-BaB_2O_4和CsLiB_6O_(10)的二次谐波的非线性光学系数。锌硒是一种很有前途的可见光到红外波长转换材料，其非线性光学系数分别为1.30和1.5μ/m。化学计量比LiNbO_3的非线性光学系数明显大于同成分LiNbO_3的非线性光学系数。

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