红外与毫米波学报, 2004, 23 (5): 360, 网络出版: 2006-05-10
近红外飞秒激光在纯石英玻璃中诱导产生色心
NEAR-INFRARED FEMTOSECOND LASER INDUCED COLOR CENTERS IN HIGH-PURITY FUSED SILICA
摘要
聚焦的近红外飞秒激光在纯石英玻璃中诱导产生Si E′心.在宏观破坏前,色心含量随激光功率密度、辐照脉冲数呈线性关系增长.通过飞秒激光辐照前后石英玻璃的吸收光谱、电子自旋共振谱、荧光谱分析,提出了超短脉冲激光作用下Si E′心的形成过程,并认为激子自陷是色心形成的主要原因.
Abstract
Si E′ centers were induced in high-purity silica glass after infrared fs(femtosecond) laser exposure. The concentration of the color centers increased linearly with the laser intensity and the number of scan time below the optical breakdown threshold. From the results of absorption, ESR and photo-luminescence spectra measurements before and after fs laser irradiation, the processes of Si E′ center formation were proposed. The self-trapped excitons are ascribed to the main reason of color centers formation.
周秦岭, 刘丽英, 徐雷, 王文澄, 邱建荣, 朱从善, 干福熹. 近红外飞秒激光在纯石英玻璃中诱导产生色心[J]. 红外与毫米波学报, 2004, 23(5): 360. 周秦岭, 刘丽英, 徐雷, 王文澄, 邱建荣, 朱从善, 干福熹. NEAR-INFRARED FEMTOSECOND LASER INDUCED COLOR CENTERS IN HIGH-PURITY FUSED SILICA[J]. Journal of Infrared and Millimeter Waves, 2004, 23(5): 360.