|
|||||
|
|
| 不同宽度脉冲激光对白宝石损伤的结构特征 | |
| 引用本文： | 程光华,王屹山,赵卫,陈国夫,刘青.不同宽度脉冲激光对白宝石损伤的结构特征[J].光子学报,2006,35(8):1121-1125. |
| 作者姓名： | 程光华 王屹山 赵卫 陈国夫 刘青 |
| 作者单位： | 中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室,西安,710068;浙江万里学院应用物理研究所,宁波,315101 |
| 基金项目： | 中国科学院知识创新工程项目 |
| 摘 要： | 研究了白宝石（〈0001〉切割）晶体在800nm ns、ps和fs激光脉冲作用下的损伤形态.实验发现,在纳秒脉冲作用下，损伤外型与晶体的结构参量一致，呈“米”字形；在皮秒激光脉冲作用下，损伤外型呈“十”字形；而在飞秒激光脉冲作用下，损伤外形呈“一”字形；说明白宝石晶体结构损伤与应力作用下晶体缺陷的择优取向有关. |
| 关 键 词： | 白宝石晶体 激光损伤 超短激光脉冲 |
| 收稿时间： | 2005-04-28 |
| 修稿时间： | 2005年4月28日 |
Structural Characteristics Induced by Nanosecond, Picosecond, and Femtosecond Laser Pulse in Sapphire |
|
| Cheng Guanghua,Wang Yishan,Zhao Wei,Chen Guofu,Liu Qing.Structural Characteristics Induced by Nanosecond, Picosecond, and Femtosecond Laser Pulse in Sapphire[J].Acta Photonica Sinica,2006,35(8):1121-1125. | |
| Authors: | Cheng Guanghua Wang Yishan Zhao Wei Chen Guofu Liu Qing |
| Institution: | (1 State Key Laboratory of Transient Optics and Photonics, Xi′an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi′an 710068 ) (2 Applied Physics Institute, Zhejiang Wanli College, Ningbo 315101 ) |
| Abstract: | The damage threshold and morphology of sapphire crystal〈0001〉 have been investigated by nanosecond(ns),picosecond(ps),and femtosecond(fs) laser pulse at 800 nm based on the mechanical,thermal,and photon-electrical properties of sapphire crystal. The star-like crack which is associated with the point group of sapphire crystal is induced by ns laser pulse,and the cross crack induced by ps and linelike crack by fs laser pulse may be relation to the preferred dislocation from anisotropic stain tensor. |
| Keywords: | Sapphire crystal Laser damage Ultrashort laser pulse |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
| 点击此处可从《光子学报》浏览原始摘要信息 | |
| 点击此处可从《光子学报》下载免费的PDF全文 | |