Femtosecond Laser-Written Waveguides in a Bismuth Germanate Single Crystal  

作　　者：钱滨 廖洋 董国平 骆芳芳 苏良碧 孙盛芝 邱建荣 

机构地区：[1]State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 [2]Graduate School of the Chinese Academy of Sciences, Beijing 100049 [3]Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 [4]State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062 [5]State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027

出　　处：《Chinese Physics Letters》2009年第7期62-64,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 50872123 and 50802083, the National Basic Research Program of China under Grant No 2006CB806000b, and the Program for Changjiang Scholars and Innovative Research Team in University （IRT0651）.

摘　　要：We demonstrate the fabrication of symmetric waveguides in a bismuth germanate （BGO） single crystal using a double line approach by an 80Ohm [emtosecond laser. The optical attenuation of the single mode waveguide is measured to be 4.2 dB/cm at 633nm. The influence of pulse energy and focal depth on the end facet of the irradiated region is also studied. This technique is promising to fabricate buried BGO waveguide arrays used in positron emission tomography systems.We demonstrate the fabrication of symmetric waveguides in a bismuth germanate （BGO） single crystal using a double line approach by an 80Ohm [emtosecond laser. The optical attenuation of the single mode waveguide is measured to be 4.2 dB/cm at 633nm. The influence of pulse energy and focal depth on the end facet of the irradiated region is also studied. This technique is promising to fabricate buried BGO waveguide arrays used in positron emission tomography systems.

关 键 词：Optics quantum optics and lasers 

分 类 号：TN204[电子电信—物理电子学] TN252