论文部分内容阅读
采用有限元法,以光纤耦合LD端面泵浦Nd:YAG激光器为例,模拟了三种冷却方式下,激光晶体的温度分布;分析了不同冷却方式对晶体温度分布和端面形变的影响;计算了不同对流换热系数和冷却水温度对晶体温度的影响。结果表明:在晶体侧面水冷时,改变对流换热系数和液体温度只能改变晶体的整体温度,对温度分布的均匀性几乎没有影响;三种冷却方式中,泵浦端水冷情况下晶体温度最低,端面形变量最小。
The temperature distribution of the laser crystal under three kinds of cooling modes is simulated by using the fiber-coupled LD end-pumped Nd: YAG laser. The influence of different cooling modes on the crystal temperature distribution and the deformation of the end face is analyzed. Effect of Different Convection Heat Transfer Coefficients and Cooling Water Temperature on Crystal Temperature. The results show that changing the convective heat transfer coefficient and the liquid temperature can only change the temperature of the crystal while cooling the side of the crystal, which has little effect on the uniformity of the temperature distribution. In the three cooling modes, the temperature of the crystal is the lowest , The smallest deformation of the end face.