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光学材料中横向SBS的稳态分析

Steady-state analysis of transverse SBS in optical materials

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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?σ苍角?从而越有可能造成材料的破坏.

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.

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中图分类号:TN249

所属栏目:高功率激光与光学

基金项目:国家863计划项目资助课题

收稿日期:2003-05-27

修改稿日期:2003-08-04

网络出版日期:2004-01-15

作者单位    点击查看

周萍:国防科学技术大学,理学院,湖南,长沙,410073
郭少锋:国防科学技术大学,理学院,湖南,长沙,410073
陆启生:国防科学技术大学,理学院,湖南,长沙,410073
邓少永:国防科学技术大学,理学院,湖南,长沙,410073
王金宝:国防科学技术大学,理学院,湖南,长沙,410073
江厚满:国防科学技术大学,理学院,湖南,长沙,410073

联系人作者:周萍(zcsp1997@sina.com)

备注:周萍(1979-),女,硕士研究生,主要从事激光破坏机理研究工作;E-mail:zcsp1997@sina.com.

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引用该论文

周萍,郭少锋,陆启生,邓少永,王金宝,江厚满. Steady-state analysis of transverse SBS in optical materials[J]. High Power Laser and Particle Beams, 2004, 16(1): 14-18

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

被引情况

【1】周萍,郭少锋,陆启生,邓少永. 横向受激布里渊散射的抑制. 强激光与粒子束, 2004, 16(7): 887-890

【2】王静,张小民,李富全,韩伟,李恪宇,冯斌. 大口径KDP晶体紫外光横向受激拉曼散射风险判据研究. 中国激光, 2011, 38(5): 502011--1

【3】苗心向,程晓锋,王洪彬,秦朗,叶亚云,袁晓东,贺少勃,郑万国. 高功率激光装置大口径光学元件侧面清洗实验. 强激光与粒子束, 2013, 25(4): 890-894

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