二维位相的实时测量  

作　　者：徐克(王寿)[1] 陈铁岐 梁丽芬 乐蓉莲 

机构地区：[1]复旦大学物理系,上海200433

出　　处：《光电子．激光》1992年第5期290-293,共4页Journal of Optoelectronics·Laser

摘　　要：在一个由180°旋转剪切干涉仪和傅里叶透镜组成的光学系统中,二维函数傅里叶谱的实部和虚部可自动分离,因此傅里叶谱的位相能实现实时测量。利用测到的位相和振幅数据,作为物函数的几个阿拉伯数字被逆数字傅里叶变换反演,其结果与输入物函数一致。In an optical system which consists of an orthogonally polarizing 180° rotational shearing interferometer and a fouier transform lem.ns, for a two dimensional object, the real part and the imaginary part of the fourier spectrum canbe separted automatically. Therefore the phase function of the Fourier spctrum can de measured in real time. Utilizing the measured data of the phases and the amplitudes, several objects (Arabic numerals) have been reconstructed by digital inverse Fourier transformation and the results are agreeable with the input objects.

关 键 词：相位计量 剪切干涉仪 傅里叶变换 

分 类 号：TH744.3[机械工程—光学工程]