Accession Number:

ADA179398

Title:

Phase Correction of Light Modulators,

Descriptive Note:

Corporate Author:

CARNEGIE-MELLON UNIV PITTSBURGH PA DEPT OF ELECTRICAL AND COMPUTER ENGINEERING

Personal Author(s):

Report Date:

1986-06-01

Pagination or Media Count:

4.0

Abstract:

A new and inexpensive holographic technique for measuring the phase errors of a two-dimensional spatial light modulator SLM is described, and experimental verification is provided. A new technique to correct spatial phase errors in any SLM is then detailed and experimentally demonstrated. This technique is employed for the Radio Shack liquid-crystal television SLM, and a shift-invariant correlator is obtained. Additional low-pass filtering techniques appropriate for any SLM with a fixed pattern of modulating cells are discussed that provide improved contrast and achieve proper correlations.

Subject Categories:

  • Optics
  • Non-Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE