【摘要】 提出用双环孔径记录进行激光散斑照相的方法。结果表明,采用这种方法不仅提高了散斑图衍射晕边缘的光强,同时和环形孔径法相比,使腰部的暗区消失了,提高了测量的准确度,图片质量较好。更多还原

【Abstract】 A double annular aperture method is put forward with which the authors recorded the processes of laser speckle photography. The distribution of light intensity in the diffracted halo of the picture of laser speckle are calculated and the pictures of Young’s fringes with higher quality are given.更多还原