Thermal Deformation of a Rectangle Nd-ion Doped Laser Crystal by High Power Diode Laser End-pumped
高功率半导体激光端面泵浦方形掺Nd3+离子激光晶体热形变研究

In order to solve thermal effect of laser crystal induced by high power diode laser end-pumped, the thermal deformation on pump face of laser crystal was exactly calculated. Through work characteristic analysis of laser crystal in diode laser end-pumped all-solid-state lasers, a thermal model of rectangle laser crystal was built. Based on the heat conductive equation, a new solution of Poisson equation was introduced and the general analytical expression of thermal deformation of rectangle laser crystal was obtained. And thermal deformation influenced by diode laser eccentric-end-pumped was investigated. Compared to the finite-element analysis or other numerical solutions, the analytical solution will not produce any calculation error. The analytical solution of thermal deformation will supply a theoretical instruct for solving thermal effect of laser crystal and improving the performance of lasers.