紫外激光照射引起的硅酸铅玻璃结构的变化  

Structure Changes of Lead Silicate Glasses Induced by UV Laser Irradiation

作　　者：贾宏志[1] 王文澄[2] 

机构地区：[1]上海理工大学光学与电子信息工程学院,上海200093 [2]复旦大学光科学与工程系,上海200433

出　　处：《光谱学与光谱分析》2006年第9期1660-1663,共4页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金(60207008);上海市教委重点学科(四期)资助;上海理工大学博士启动基金资助

摘　　要：采用紫外-可见吸收光谱和电子自旋共振谱(ESR)对硅酸铅玻璃薄膜和体材料受紫外激光照射前后的结构变化进行了研究。研究发现:266nm的紫外激光照射硅酸铅玻璃体材料时,能使其Urbach能量增大,即玻璃结构的无序性增大。电子自旋共振谱研究表明,266nm激光照射不会在硅酸铅玻璃中产生顺磁缺陷中心,也不会对硅酸铅玻璃薄膜在235nm附近的吸收峰产生影响,但用248nm紫外激光照射则观察到了235nm吸收峰的光漂白现象。The structure changes of lead silicate glasses induced by UV laser irradiation were studied by UV-visible spectra and electron spin resonance （ESR）. The Urbach energies of lead silicate glasses exposed to the 266 nm UV laser increased. This implied that the disorder of the lead silicate glasses was increased. The electron spin resonance experiments showed that the oxygen deficiency centers in lead silicate glass did not change to paramagnetic defects after exposure to 266 nm laser beam, and the absorption peak near 235 nm for lead silicate glass film did not change either. But this absorption peak was bleached after exposure to the 248 nm UV laser.

关 键 词：硅酸铅玻璃 吸收谱 电子自旋共振谱 紫外激光 

分 类 号：O433.5[机械工程—光学工程]