中国激光, 2018, 45 (9): 0904002, 网络出版: 2018-09-08
基于强度传输方程的激光损伤应力检测技术研究 
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A TIE Based Technique for Measurement of Stress Generated by Laser Induced Damage
图 & 表
图 2. Eout(x,y)传播示意图。(a)发散波;(b)会聚波
Fig. 2. Propagation diagrams of Eout(x,y). (a) Divergent wave; (b) convergent wave
图 3. (a)原始设定的相位延迟量δ(x,y)的分布;(b)方位角β(x,y)的分布;(c)出射光相位分布;(d)聚焦强度分布;(e)离焦和欠焦强度差分布
Fig. 3. (a) Distribution of original phase retardation δ(x,y); (b) distribution of azimuthal angle β(x,y);(c) distribution of emergent light; (d) distribution of focusing strength; (e) phase distribution of the intensity difference between owe-focus and off-focus
图 4. (a) TIE恢复相位分布;(b)图4(a)中红色虚线方向上恢复相位值与原始相位延迟的对比;(c)图4(a)中黄色虚线方向上恢复相位值与原始相位延迟的对比
Fig. 4. (a) TIE retrieval phase map; (b) comparison between retrieval phase and original phase delay in the direction of red dotted line in Fig. 4 (a); (c) comparison between retrieval phase and original phase delay in the direction of yellow dotted line in Fig. 4 (a)
图 5. (a)偏振片旋转π/4后聚焦位置处的强度图;(b)两偏振方向强度相加得到的聚焦位置强度图;(c)由合并后的强度图计算得到的相位延迟量图;(d)计算得到的相位延迟量与原始相位延迟信息的对比
Fig. 5. (a) Intensity map in on-focus position after polarizer rotating π/4; (b) two different polarization directions integrated intensity map in on-focus position; (c) phase delay map calculated by the combined intensity map; (d) comparison between the calculated phase delay with the original phase delay information
图 6. 显微镜下样品线偏振光TIE恢复相位差信息。(a)聚焦强度图;(b)应力双折射测量结果
Fig. 6. TIE retrieval phase maps of samples under microscope with linear polarization. (a) Focus intensity maps; (b) stress birefringence measurement results
表 1损伤点样品参数
Table1. Sample parameters of damage points
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雷耀, 刘诚, 程北, 张雪洁, 刘志刚. 基于强度传输方程的激光损伤应力检测技术研究[J]. 中国激光, 2018, 45(9): 0904002. Lei Yao, Liu Cheng, Cheng Bei, Zhang Xuejie, Liu Zhigang. A TIE Based Technique for Measurement of Stress Generated by Laser Induced Damage[J]. Chinese Journal of Lasers, 2018, 45(9): 0904002.
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