| 光学材料中横向SBS的稳态分析 |
| |
| 引用本文： | 周萍,郭少锋,陆启生,邓少永,王金宝,江厚满.光学材料中横向SBS的稳态分析[J].强激光与粒子束,2004,16(1):14-18. |
| |
| 作者姓名： | 周萍 郭少锋 陆启生 邓少永 王金宝 江厚满 |
| |
| 作者单位： | 国防科学技术大学 理学院，湖南 长沙 410073 |
| |
| 基金项目： | 国家863计划项目资助课题 |
| |
| 摘 要： | 从非线性光学的耦合波理论出发，建立了种子光入射的窄带泵浦的横向受激布里渊散射的二维理论模型，并对稳态情形进行了数值模拟，得到了散射光强的二维分布。计算表明，散射光场在入射面内呈现出“局部集中”的特点，而且由于“空间压缩”效应，使得获得的最大散射光强远大于初始泵浦光强。还分析了光场及材料参数对获得的散射光强的影响，得出：入射的激光功率密度越大，光学元件的横向尺寸越长，材料的吸收系数越小，受激散射产生的散射光和弹性声波强度就越大，在材料内部引起的应力也越强，从而越有可能造成材料的破坏。
|
| 关 键 词： | 光学材料 横向受激布里渊散射 强激光系统 激光诱导破坏 |
| 文章编号： | 1001-4322(2004)01-0014-05 |
| 收稿时间： | 2003/5/27 |
| 修稿时间： | 2003年5月27日 |
Steady-state analysis of transverse SBS in optical materials |
| |
| ZHOU Ping,GUO Shao-feng,LU Qi-sheng,DENG Shao-yong,WANG Jin-bao,JIANG Hou-man.Steady-state analysis of transverse SBS in optical materials[J].High Power Laser and Particle Beams,2004,16(1):14-18. |
| |
| Authors: | ZHOU Ping GUO Shao-feng LU Qi-sheng DENG Shao-yong WANG Jin-bao JIANG Hou-man |
| |
| Institution: | (College of Science,National University of Defense Technology,Changsha 410073,China) |
| |
| Abstract: | The coupled wave theory of nonlinear optics is adopted to establish two dimensional theoretical model of seeded、narrowband pumped transverse SBS. The numerical investigation of steady state situation is offered and the planar distribution of scattering light intensity is obtained. The calculation shows that scattering light has the character of local concentration, and the maximum of scattering light intensity is much greater than the pump light intensity as a result of “space compression” effect. This paper also analyzes the variation of scattering light intensity with different pump conditions and different material parameters and puts some qualitative conclusions. |
| |
| Keywords: | Optical materials Transverse SBS Intensive laser systems Laser induced damage |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《强激光与粒子束》浏览原始摘要信息 |
| 点击此处可从《强激光与粒子束》下载免费的PDF全文 |
