Dynamics of Efficiency Change by Temperature in Diode Pumped Nd：YAG Heat Capacity Laser  

作　　者：壬小军 唐兵 束小建 

机构地区：[1]Institute of Applied Physics and Computational Mathematics, PO Box 8009-11, Beijing 100088

出　　处：《Chinese Physics Letters》2007年第7期1930-1933,共4页中国物理快报（英文版）

摘　　要：We investigate the influence of temperature on the efficiency of diode pumped Nd：YAG heat capacity laser is studied. It is shown that the efficiency of such a laser system is greatly reduced at higher temperature. This bad behaviour is mainly caused by the doped-ion redistribution among various Stark levels of the ground state, and by a thermal equilibrium between the upper laser level and the pump level. Meanwhile, the thermal excitations from the ground state to the lower laser level also play a role. We derive a model to describe those effects, with the considerations of emission spectrum of laser diodes, the subtle Stark structures and the linewidth of absorption and of simulated-emission.We investigate the influence of temperature on the efficiency of diode pumped Nd：YAG heat capacity laser is studied. It is shown that the efficiency of such a laser system is greatly reduced at higher temperature. This bad behaviour is mainly caused by the doped-ion redistribution among various Stark levels of the ground state, and by a thermal equilibrium between the upper laser level and the pump level. Meanwhile, the thermal excitations from the ground state to the lower laser level also play a role. We derive a model to describe those effects, with the considerations of emission spectrum of laser diodes, the subtle Stark structures and the linewidth of absorption and of simulated-emission.

关 键 词：SOLID-STATE LASERS ABSORPTION 

分 类 号：O45[理学—无线电物理]