Self-Assembled Quasi-Periodic Voids in Glass Induced by a Tightly Focused Femtosecond Laser  

作　　者：戴晔 胡晓 宋娟 余禺鲲 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]Department of Physics, Shanghai University, Shanghai 200444 [3]Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027

出　　处：《Chinese Physics Letters》2007年第7期1941-1944,共4页中国物理快报（英文版）

基　　金：Supported by the National Basic Research Programme of China under Grant No 2006CB806000b, and the National Natural Science Foundation of China under Grant No 50672087, and the Shanghai Leading Academic Discipline Project under Grant No T0104.

摘　　要：Multiple refocusing of a tightly focused femtosecond laser due to the dynamic transformation between self-focusing and self-defocusing is employed to provide a novel method to produce quasi-periodic voids in glass. It is found that the diameter or the interval of the periodic voids increases with the increasing pulse energy of the laser. The detailed course for producing periodic voids is discussed by analysing the damaged track induced by the tightly focused femtosecond laser pulses. It is suggested that this periodic structure has potential applications in fabrication of three-dimensional optical devices.Multiple refocusing of a tightly focused femtosecond laser due to the dynamic transformation between self-focusing and self-defocusing is employed to provide a novel method to produce quasi-periodic voids in glass. It is found that the diameter or the interval of the periodic voids increases with the increasing pulse energy of the laser. The detailed course for producing periodic voids is discussed by analysing the damaged track induced by the tightly focused femtosecond laser pulses. It is suggested that this periodic structure has potential applications in fabrication of three-dimensional optical devices.

关 键 词：TRANSPARENT MATERIALS FUSED-SILICA FABRICATION PULSE 

分 类 号：O41[理学—理论物理]