Structural Change in Au^3＋-Doped BK7 Glass Irradiated by Femtosecond Laser  

作　　者：丁婷 王丽 周时凤 鲍家兴 邱建荣 

机构地区：[1]State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027

出　　处：《Chinese Physics Letters》2007年第5期1372-1375,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 50672087, and the National Basic Research Programme of China under Grant No 2006CB806000b.

摘　　要：We report on structural change in an Au^3＋-doped BK7 glass irradiated by an infrared femtosecond laser at 800 nm. A grating structure is inscribed in the glass sample. The glass sample is then annealed at various temperatures. Structural change of the grating is observed by an optical microscope. Absorption spectra indicate that colour centres are induced after the laser irradiation, and they decrease with increasing annealing temperature. Au nanoparticles are precipitated at high temperatures （≥ 600℃）. The mechanisms of the phenomena are discussed.We report on structural change in an Au^3＋-doped BK7 glass irradiated by an infrared femtosecond laser at 800 nm. A grating structure is inscribed in the glass sample. The glass sample is then annealed at various temperatures. Structural change of the grating is observed by an optical microscope. Absorption spectra indicate that colour centres are induced after the laser irradiation, and they decrease with increasing annealing temperature. Au nanoparticles are precipitated at high temperatures （≥ 600℃）. The mechanisms of the phenomena are discussed.

关 键 词：SODA-LIME GLASS TRANSPARENT MATERIALS PULSES FABRICATION NANOPARTICLES 

分 类 号：O43[机械工程—光学工程]