Modal Characterization of a Planar Waveguide in Bismuth Borate Crystal  

作　　者：王磊 路庆明 马宏骥 

机构地区：[1]School of Physics, Shandong University, Jinan 250100 [2]State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100 [3]School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100 [4]State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871

出　　处：《Chinese Physics Letters》2009年第6期208-211,共4页中国物理快报（英文版）

基　　金：Supported in part by the National Natural Science Foundation of China under Grant 10735070, and the China Postdoctoral Science Foundation Funded Project under Grant No 20080431195.

摘　　要：We report on the fabrication and modal property studies of planar waveguide structure in x-cut bismuth borate biaxial crystal formed by He ion implantation with triple energies. The prism coupling method is used to measure the effective refractive indices of this waveguide. We reconstruct the refractive index distribution of this waveguide by the reflectivity calculation method. Our results indicate that a broadened optical barrier is produced by the multiple He ion implantations. The so-called tunneling effect of the non-stationary mode in this type of barrier waveguide is presented by the well-known finite difference beam propagation method.We report on the fabrication and modal property studies of planar waveguide structure in x-cut bismuth borate biaxial crystal formed by He ion implantation with triple energies. The prism coupling method is used to measure the effective refractive indices of this waveguide. We reconstruct the refractive index distribution of this waveguide by the reflectivity calculation method. Our results indicate that a broadened optical barrier is produced by the multiple He ion implantations. The so-called tunneling effect of the non-stationary mode in this type of barrier waveguide is presented by the well-known finite difference beam propagation method.

关 键 词：gamma-ray bursts GAMMA-RAYS RELATIVITY 

分 类 号：O437[机械工程—光学工程] TN252[理学—光学]