| 横向受激布里渊散射诱导破坏的数值研究 |
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| 引用本文： | 郭少锋,陆启生,周萍,曾学文,邓少永,程湘爱.横向受激布里渊散射诱导破坏的数值研究[J].物理学报,2004,53(11). |
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| 作者姓名： | 郭少锋 陆启生 周萍 曾学文 邓少永 程湘爱 |
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| 作者单位： | 国防科学技术大学理学院,长沙,410073 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 基于非线性光学的耦合波理论 ,建立了大尺寸光学元件中横向受激布里渊散射 (TSBS)的二维模型及其数值模拟方法 ,并对熔石英玻璃中的瞬态TSBS进行了理论研究 ,得到了存在TSBS情况下光学元件内光场和应力场的演变特征 ,探讨了TSBS对高功率激光系统透过性能的影响 ,以及在光学元件内诱导破坏的可能性和规律
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| 关 键 词： | 横向受激布里渊散射 光学材料 破坏机理 应力场 |
Numerical study on damage phenomenon induced by transverse stimulated Brillouin scattering |
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| Guo Shao-Feng Lu Qi-Sheng Zhou Ping,Zeng Xue-Wen,Deng Shao-Yong,Cheng Xiang-Ai.Numerical study on damage phenomenon induced by transverse stimulated Brillouin scattering[J].Acta Physica Sinica,2004,53(11). |
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| Authors: | Guo Shao-Feng Lu Qi-Sheng Zhou Ping Zeng Xue-Wen Deng Shao-Yong Cheng Xiang-Ai |
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| Abstract: | Based on the coupled wave equations of nonlinear optics, a two-dimensional physics model is established to describe transverse stimulated Brilluoin sattering (TSBS) in large-aperture optics of a high-power laser system. The temporal and spatial profile of the stress induced by TSBS is evaluated numerically, and the damage characteristics of optical components is presented, which agrees well with the experimental phenomenon observed at LLN laboratory. The energy loss induced by TSBS are calculated to be up to 20%, showing that TSBS may have strong influence on routine operation of high-power laser systems. |
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| Keywords: | TSBS optical materials damage mechanism energy loss |
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