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飞秒多脉冲激光烧蚀金属过程中的能量剩余现象

李莉 张端明 房然然 祖小涛

强激光与粒子束2009,Vol.21Issue(11):1671-1676,6.
强激光与粒子束2009,Vol.21Issue(11):1671-1676,6.

飞秒多脉冲激光烧蚀金属过程中的能量剩余现象

Residual energy in femtosecond multipulse laser ablation of metal

李莉 1张端明 2房然然 2祖小涛2

作者信息

  • 1. 电子科技大学,物理电子学院,应用物理系,成都,610054
  • 2. 华中科技大学,物理系,武汉,430074
  • 折叠

摘要

Abstract

A new theoretical model has been developed to describe the whole ablation process, including the effect of dynamic absorptance and evaporation. Taking gold as an example, a finite difference method is employed to simulate the electron and lattice temperature evolution under the irradiation of single and multipulse femtosecond laser. The evolution of residual energy coefficient for multipulse as a function of pulse number is given. It is found that the calculated coefficients are in good agreement with the corresponding experimental data, proving the existence of residual energy during femtosecond multipulse ablation.

关键词

飞秒激光烧蚀/多脉冲/能量剩余系数/温度演化

Key words

femtosecond laser ablation/ multipulse/ residual energy coefficient/ temperature evolution

分类

信息技术与安全科学

引用本文复制引用

李莉,张端明,房然然,祖小涛..飞秒多脉冲激光烧蚀金属过程中的能量剩余现象[J].强激光与粒子束,2009,21(11):1671-1676,6.

基金项目

国家自然科学基金项目(10604017, 10675048) (10604017, 10675048)

武汉市晨光计划项目(20045006071-40) (20045006071-40)

强激光与粒子束

OA北大核心CSCDCSTPCD

1001-4322

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