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报道了用双频光栅剪切干涉术检测钛宝石晶体在Ａｒ￣＋激光器轴向泵浦下的热效应的方法，并给出用这种方法测量钛宝石晶体热透镜焦距随不同泵浦功率变化的实验结果。
The method of detecting the thermal effect of TiGe sapphire crystal by double-frequency grating shear interference in the axial pumping of Ar ~ + laser is reported. The method of measuring the thermal focal length of TiN sapphire crystal thermal lens with different pump power is given Experimental results.