Grimes D N
Appl Opt. 1971 Jul 1;10(7):1567-70. doi: 10.1364/AO.10.001567.
A method of measuring the second-order degree of coherence in an arbitrary plane by means of a compact wavefront shearing interferometer is described. The prism interferometer previously described by Saunders produces two sheared images that interfere, allowing measurement of the degree of spatial coherence. If the degree of coherence is a function of coordinate differences only, the visibility is constant; otherwise it varies over the field. Experimental results are given.
描述了一种利用紧凑型波前剪切干涉仪测量任意平面上二阶相干度的方法。桑德斯先前描述的棱镜干涉仪产生两个相互干涉的剪切图像，从而可以测量空间相干度。如果相干度仅是坐标差的函数，则可见度是恒定的；否则它会在视场中变化。给出了实验结果。
