When the pumping area cannot approach the disk had aperture, the concentrated tensile stress appears near the edge of disk hard aperture, while the disk is pumped full aperture the surface exhibits compressive stress, and center is tensile stress which is
When the pumping area cannot approach the disk had aperture, the concentrated tensile stress appears near the edge of disk hard aperture, while the disk is pumped full aperture the surface exhibits compressive stress, and center is tensile stress which is
当抽运光斑未充满激光介质时，介质的表面靠近边缘处会出现大的拉应力集中，并且介质中最大拉应力和表面的最大轴向位移随抽运光斑尺寸缩小面增大；而当抽运光充满介质时，表面是压应力，较小的拉应力存在于介质内部。