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超短强脉冲激光与材料相互作用的机理研究
  • 项目名称：超短强脉冲激光与材料相互作用的机理研究
  • 项目类别：青年科学基金项目
  • 批准号：10604017
  • 申请代码：A040405
  • 项目来源：国家自然科学基金
  • 研究期限：2007-01-01-2009-12-31
  • 项目负责人：李智华
  • 负责人职称：副教授
  • 依托单位：华中科技大学
  • 批准年度：2006
中文摘要：

实验上采用强脉冲激光烧蚀金属靶材，研究被辐照靶材的复杂热效应；在不同的激光工作参数条件下，观察飞秒激光诱导纳米表面周期性结构与烧蚀产生的纳米粒子的形貌特征，并采用多种实验检测手段进行表征。理论结合实验，通过深入分析靶材对激光能量的吸收和热电子系统的形成过程，首次建立了从纳秒到飞秒的激光与物质热物理效应的新统一模型；并基于Maxwell方程和Lambert-Beer定律，推导出金属靶材吸收率随着靶材温度的变化关系，建立新双温模型来描写飞秒脉冲激光对金属靶材的烧蚀过程；还深入讨论高能域（>1eV）飞秒脉冲激光烧蚀下靶材电子态密度的变化而导致的热物理参数与温度的非线性关系，建立适用于高能域激光烧蚀的双温方程，研究高能域激光烧蚀的热物理机制。此外，还研究了激光能量密度、脉宽和脉冲数对电声驰豫时间和剩余能量吸收系数的影响，深入探讨靶材烧蚀阈值和电声耦合系数对激光诱导表面周期性结构影响的规律，并进行数值模拟。通过模拟为制备粒度均匀纳米粒子的工艺参数优化提供线索，并与实验结果进行比较。取得的相关的研究成果在国际上颇有影响力，分别发表在国内外权威期刊上，共15篇，13篇被SCI收录，2篇正在审稿

中文主题词： 超短强脉冲激光；电声耦合系数；纳米周期结构；双温模型
结论摘要：

英文主题词ultra-short high-power pulsed laser; electron-phonon coupling; nano periodical structures;TTM model

成果综合统计
成果类型
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  • 期刊论文
  • 会议论文
  • 专利
  • 获奖
  • 著作
  • 36
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期刊论文
Model for the magnetoresistance of the silver-rich Ag2+delta Se and Ag2+delta Te thin films
A new model for studying the plasma plume expansion property during nanosecond pulsed laser depositi
Effect of pulse width and fluence of femtosecond laser on electron-phonon relaxation time
A new dynamics expansion mechanism for plasma during pulsed laser deposition
A metal-semiconductor composite model for the linear magnetoresistance in high magnetic field
Quasi-Random Resistor Network Model for Linear Magnetoresistance of Metal-Semiconductor Composite
A unified thermal model of thermophysical effects with pulse width from nanosecond to femtosecond
Spatiotemporal characteristic of epidemic spreading in mobile individuals
Multiple partial attacks on complex networks
Theoretical design and experimental study of hydrothermal synthesis of KNbO3
The influence of ferroelectric KTN particles on electric properties of 0-3 ferroelectric composites
A three-dimensional resistor network model for the linear magnetoresistance of Ag2+delta Se and Ag2+
Improved thermal model and its application in UV high-power pulsed laser ablation of metal target
Role of pulse repetition rate in film growth of pulsed laser deposition
Criticality of Parasitic Disease Transmission in a Diffusive Population
Continuous weight attack on complex network
Energy accumulation effect and parameter optimization for fabricating of high -uniform and large-are
Developments of lithium-ion batteries and challenges of LiFePO4 as one promising cathode material
入射角对飞秒激光诱导金属表面周期结构的影响
能量累积效应对飞秒激光诱导表面周期结构的影响
Microstructure and electrical properties of Bi2O3 excess Bi3.25La0.75Ti3O12 ferroelectric ceramics
Laser-target interaction during high-power pulsed laser deposition of superconducting thin films
A new synthetical model of high-power pulsed laser ablation
Effects of continuous size distributions on pressures of granular gases
Global pressure of one-dimensional polydisperse granular gases driven by Gaussian white noise
Metal absorptivity in femtosecond pulsed laser ablation
Sandpile on scale-free networks with assortative mixing
Hysteresis loops of first-order ferroelectric bilayers or superlattices and their size effect
Sandpile dynamics driven by degree on scale-free networks
Thermal model for nanosecond laser sputtering at high fluences
Ionization effect to plasma expansion study during nanosecond pulsed laser deposition
Substrate temperature evolution in ions-surface interaction processes of pulsed laser deposition
脉冲激光沉积动力学研究进展
粒径呈幂律分布的颗粒气体中的速度分布特性
Theoretical and experimental study of energy transportation and accumulation in femtosecond laser ablation on metals
脉冲重复频率对脉冲激光沉积薄膜的生长过程的影响
获奖
脉冲激光沉积动力学及其应用研究
脉冲激光沉积动力学及其应用研究
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