Abstract

There are a number of factors that impinge upon the design of spatial light modulators (SLMs) for use in 2-dimensional optical correlators. Some of the issues that have received attention include: array size, contrast ratio, gray scale, electronic addressing, and approaches towards amplitude and phase modulation.^1-3 Missing from this discussion are the problems associated with using a pixelated spatial filter and ways to remedy this problem. This is most unfortunate since most SLMs used in the filter plane have an inherent pixelated structure. The objective of this paper is to draw attention to this problem and propose a solution.

© 1990 Optical Society of America