Analytical model for temperature, stress and strain distribution inside a side-pumped Nd:YAG laser rod having a Gaussian pump profile

作者：Dindarlu M H Moghtader^*; Maleki A; Saghafifar H; Tehrani M Kavosh; Baghali S

来源：Laser Physics, 2015, 25(4): 045001.

DOI：10.1088/1054-660X/25/4/045001

• laser rod
• thermal effects
• Gaussian pump profile
• temperature distribution
• stress
• strain

In this paper, we introduce an analytical model for the temperature distribution of a diode side-pumped Nd:YAG laser rod by considering a Gaussian pump profile, taking into account the dependence of thermal conductivity on temperature. The stress and strain components are then derived by considering the dependence of the thermal expansion coefficient on the temperature. Our analytical model shows a very good agreement with numerical results. The maximum relative error, when compared with numerical results, is about 0.2 and 2.0% at the center of a laser rod for temperature and stress respectively.

• 出版日期2015-4