| Fabrication of Microstructures in LiF Crystals by a Femtosecond Laser |
| |
| 作者姓名： | 赵全忠 邱建荣 杨旅云 姜雄伟 赵崇军 朱从善 |
| |
| 作者单位： | PhotonCraftProject,ShanghaiInstituteofOpticsandFineMechanics,ChineseAcademyofSciences,Shanghai201800 |
| |
| 摘 要： | We report the space-selective formation of colour centres and refractive index change in LiF crystals at room temperature by an 800nm Ti:sapphire femtosecond laser irradiation. Optical absorption and photoluminescence spectra have been measured for the crystal before and after the laser irradiation. The absorption spectra indicate F and F3^ colour centres are induced in LiF after the laser irradiation. When the temperature of heat treatment reaches 300℃, the absorption peak disappears, indicating that the induced colour centres are bleached. The induced refractive index change is also evaluated. A mechanism for the formation of colour centres and refractive index change is proposed.
|
| 关 键 词： | LiF晶体 半导体激光器 氟化锂晶体 微观结构 制作 |
| 本文献已被 维普 等数据库收录！ |
|
