一、前言近代实验力学领域对于材料微观响应的检测变得备加关注。微观力学的重要性促使莫尔技术的灵敏度和分辨率必须在微观上达到更加精细的水平。也许使灵敏度获得最大改进的方法是采用了相干光学处理。相干光技术发展之前,传统莫尔条纹的测量灵敏度等于参考光栅的节距。振幅光栅照相复制中的衍射效应使最小光栅距限制在大约0.025mm。在相干光技术中,灵敏度与光栅的衍射特性相关。通过使用高 First, the foreword The field of modern experimental mechanics for the detection of micro-materials become more attention. The importance of microcosmic mechanics has led to the finer level of sensitivity and resolution of Moiré techniques. Perhaps the most significant improvement in sensitivity is the use of coherent optical processing. Prior to the development of coherent light technology, the measurement sensitivity of traditional moiré fringes was equal to the pitch of the reference raster. The diffraction effect in amplitude grating photographic replication limits the minimum grating pitch to about 0.025 mm. In coherent light technology, the sensitivity is related to the diffraction properties of the grating. By using high