利用稳腔条件测量LD端面泵浦激光晶体的热焦距

Measurement of thermal focal length of LD-end-pumped crystal under stable-cavity-condition

利用稳腔条件 ,从谐振腔的角度推导了热焦距计算公式 ,并作了简单的等效 ,为热焦距的测量提供了方便简洁的方法。从实验的角度 ,对掺杂为 0 .5 %的Nd∶YVO4晶体的热焦距进行实际测量 ,得出了不同泵浦功率下的热焦距数值。对列阵半导体激光端面泵浦下激光晶体的热效应作了分析 ,用热焦距计算公式进行计算 ,把结果与利用稳腔条件测量所得结果进行了比较。两种结果基本吻合 。

Under stable-cavity-condition,expression of thermal focal length is educed in the view of cavity.Thermal focal length of Nd∶YVO 4 crystal is measured,and the result is obtained in experiment.We calculate it in its traditional formula too.At last the two results is compared,and we make a conclusion that they are coincident basically.