飞秒激光诱导稀土掺杂BaO-TiO2-SiO2玻璃析晶的发光光谱  

Photoluminescence Spectra of Crystal Pattern Written by Femtosecond Laser Irradiation in Rare-earth-doped BaO-TiO2-SiO2 Glasses

作　　者：朱斌[1] 戴晔[2,3] 马洪良[2,3] 张松敏[1] 林耿[1] 邱建荣[1] 

机构地区：[1]浙江大学硅材料国家重点实验室,杭州310027 [2]上海大学分析测试中心 [3]上海大学物理系,上海200044

出　　处：《武汉理工大学学报》2007年第E01期348-352,共5页Journal of Wuhan University of Technology

基　　金：National Natura Science Foundation （50672087）and 973 Program（2006CBS06000b）.

摘　　要：使用聚焦的800nm，120fs，1kHz飞秒激光照射Tm^3＋和Eu^3＋掺杂的BaO-TiO2-SiO2玻璃。照射开始，Tm^3＋和Eu^3＋掺杂玻璃均在飞秒激光聚焦附近发出强烈白光。照射20s后，掺杂Tm^3＋的玻璃在聚焦附近开始有蓝光发出，但在Eu^3＋掺杂玻璃同时有蓝光和红光发出。由显微拉曼光谱判定：经过激光的照射后，2种玻璃均有Ba2TiSi2O8晶体析出。A focused femtosecond laser with 800 nm, 250 kHz and 150 fs was used to irradiate Tm^3＋-doped and Eu^3＋- doped BaO-TiO2-SiO2 glasses. White emissions were observed alround the focal point of the femtosecond laser beam at the initial stage of the laser irradiation in both glass samples. A blue emission began to emerge from the irradiation region in Tm^3＋ -doped glass after 20 s irradiation, but both blue and red emissions were observed from the irradiation region in Eu^3＋ -doped glass. It was found from micro-Raman spectra that nonlinear optical crystal BaaTiSiaO8 were precipitated in both glass samples after the laser irradiation. The mechanisms of the observed phenomena are discussed.

关 键 词：飞秒激光 玻璃 发光 

分 类 号：TQ171.1[化学工程—玻璃工业]