Acta Optica Sinica, Volume. 9, Issue 11, 1047(1989)
Imaging two-dimensional objects composed of discrete points with a cross-grating interferometer
In this paper the second cross-grating of a cross-grating interferometer is replaced with two one-dimensional gratings and the two fringe boxes of x and y directions are separated. When an object is composed of N discrete points, the image, N2 points, can be obtained from the two fringe boxes, consisting of the N correct ones and N(N - 1) false reconstructions. The second image is obtained by rotating the cross-grating interferometer an angle about its axis of symmetry. Comparing the first image to the second, we discover that the N(N-1) false reoonstruotiong are different and the N oorrect image points are the same. By multiplying the two images, the false reoons—tmotions are eliminated and the correot ones are obtained. The experimental results are given.
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WU JIANHONG, CHEN LINSEN, JIANG YAGUANG. Imaging two-dimensional objects composed of discrete points with a cross-grating interferometer[J]. Acta Optica Sinica, 1989, 9(11): 1047