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.
Abstract：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.
WANG Xiao-Jun;TANG Bing;SHU Xiao-Jian. Dynamics of Efficiency Change by Temperature in Diode Pumped Nd:YAG Heat Capacity Laser[J]. 中国物理快报, 2007, 24(7): 1930-1933.
WANG Xiao-Jun, TANG Bing, SHU Xiao-Jian. Dynamics of Efficiency Change by Temperature in Diode Pumped Nd:YAG Heat Capacity Laser. Chin. Phys. Lett., 2007, 24(7): 1930-1933.
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