| 飞秒激光在石英玻璃中诱导微爆炸的理论研究 |
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| 引用本文： | 徐世珍,贾天卿,孙海轶,李晓溪,程兆谷,冯东海,李成斌,徐至展. 飞秒激光在石英玻璃中诱导微爆炸的理论研究[J]. 物理学报, 2005, 54(9): 4146-4150 |
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| 作者姓名： | 徐世珍 贾天卿 孙海轶 李晓溪 程兆谷 冯东海 李成斌 徐至展 |
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| 作者单位： | 中国科学院上海光学精密机械研究所强场激光物理国家重点实验室，上海 201800 |
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| 基金项目： | 国家自然科学基金（批准号：G60108002）资助的课题. |
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| 摘 要： | 利用有限元方法建立了二维模型，研究了飞秒激光作用下石英玻璃中导带电子的产生、激光 能量的沉积、导带电子和能量扩散等微观过程. 计算了导带电子扩散引起的局部净电荷及其 形成的静电场分布，初步揭示了微爆炸的演化过程.关键词：雪崩击穿模型微爆炸飞秒激光有限元方法
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| 关 键 词： | 雪崩击穿模型 微爆炸 飞秒激光 有限元方法 |
| 文章编号： | 1000-3290/2005/54(09)/4146-05 |
| 收稿时间： | 2004-12-19 |
| 修稿时间： | 2004-12-192005-01-31 |
Theoretical analysis of fs-laser induced micro-explosion in fused silica |
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| XU Shi-zhen,Jia Tian-Qing,Sun Hai-Yi,LI Xiao-xi,Cheng Zhao-Gu,Feng Dong-Hai,LI Cheng-Bin,Xu Zhi-Zhan. Theoretical analysis of fs-laser induced micro-explosion in fused silica[J]. Acta Physica Sinica, 2005, 54(9): 4146-4150 |
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| Authors: | XU Shi-zhen Jia Tian-Qing Sun Hai-Yi LI Xiao-xi Cheng Zhao-Gu Feng Dong-Hai LI Cheng-Bin Xu Zhi-Zhan |
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| Abstract: | Based on the avalanche model, the evolution of femtosecond laser induced micro-e xplosion in fused silica was investigated. The microscopic processes, including the production of conduction band electron (CBE), laser energy deposition, CBE a nd energy diffusion were solved by a finite element method in two-dimensional cy lindrical coordinates. The accumulated net charge and the electrostatic field we re also calculated. The results indicate that the CBE and energy diffusions play an important role in the micro-explosion in dielectrics. |
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| Keywords: | avalanche model micro-explosion finite element method femtosecond laser |
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