Temperature field and pump-face thermal distortion field of a rectangle Nd∶GdVO_4 crystal end-pumped by the diode laser with Gauss mode was researched by the analytical theory.
通过对半导体激光端面入射Nd∶GdVO4激光晶体工作特点分析,建立了符合激光晶体工作状态的热模型,利用热传导方程(泊松方程)的一种新求解方法,得出了矩形截面Nd∶GdVO4晶体的温度场分布和端面热形变场通解表达式,同时对影响激光晶体温度场分布的各种因素进行了定量研究。
In order to solve the thermal effect problem of laser rod by diode laser end-pumped,based on the heat conduct theory,a novel eigenfunction group of heat conduction equation was established and the general solutions of temperature field and thermal distortion field within laser rod were obtained.
为了解决激光二极管端面泵浦激光棒引起的热效应问题,基于热传导理论,建构了热传导方程新的本征函数解,得出了激光棒内温度场与热形变场的一般解析表达式。
By analyzing the working characteristics of the laser diode(LD) side-pumped crystal,thermal physical model according with actual working conditions was built,the general expressions of temperature field and thermal distortion field of rectangular Nd∶YVO4 crystal were obtained by using a new solution in heat co.
通过对激光二极管(LD)侧面抽运晶体工作特点分析,建立了符合实际工作情况的热模型,利用正交各向异性材料热传导方程,得出长方形Nd∶YVO4晶体温度场和热形变场通解表达式,并提出了两种有效减小晶体热形变的方法。
Analytical calculation of temperature distribution and thermal deformation during doping of Zn in GaN/Al_2O_3 material induced by nanosecond pulse-width laser;
纳秒级脉冲激光诱导Zn掺杂过程中GaN/Al_2O_3材料的温度分布及热形变解析分析
Our study indicates that the mechanical mechanism of shock wave induced by impulsive X-ray can be classified as the following two categories:(1) it is gen-erated by the blow-off of the surface layer of the radiated material;(2)it is caused by thermal deformation.
研究表明：脉冲Ｘ射线热击波有两种不同的力学机制，其一是表面的汽化反冲，其二是热形变。
An interference method is proposed to measure the thermal deformation of solid state laser′s end surface easily and in real time with high spatial precision.
提出了一种易于实现、高空间精度、实时测量激光端面抽运固体激光器端面热形变的干涉测量方法。
The expression of surface thermal lens(STL) signal is deduced from photothermal deformation theory of thin film surface and STL diffraction theory.
由薄膜表面光热形变简化理论和表面热透镜衍射理论导出表面热透镜信号表达式,从理论上证明了表面热透镜信号和薄膜吸收率的线性关系。