Abstract

A compact coherent optical correlator with thirty parallel filters and a filter maker were designed, fabricated, and tested. Two holographic optical elements were used to each form fifteen Fourier transforms. These elements performed a number of functions that would require several conventional elements, thus reducing the overall correlator size. The correlator had a real time input via a liquid crystal light valve and an image intensifier in front of it for operation at low light levels. A computer controlled filter maker automated the filter recording process.

© 1989 Optical Society of America