Thermal deformation of a rectangle Nd-ion doped laser crystal by high power diode laser end-pumped

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.