A submicron metal grid mirror liquid crystal light valve for optical processing applications

U. Efron, A. Au, C. S. Bak, N. W. Goodwin, P. G. Reif, H. L. Garvin, W. Byles, Y. Owechko, M. S. Welkowsky

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations


A submicron metal grid mirror was incorporated into the structure of a silicon liquid light valve. In our experiment, a 0.5 μm-period, aluminum wire grid mirror was used in conjunction with a 90°-twisted nematic configuration. A sharp threshold with a peak-to-threshold ratio of 3:1 was experimentally observed. The threshold intensity level was tunable from 2.5 μW/cm2 to 50 μW/cm2 by changing the bias voltage from about 5 to 25 volts. These properties allow the polarization-sensitive mirror-based LCLV to be used as a non-linear SLM with applications in optical computing (bistable device) and adaptive image thresholding. The device can also be used as an interfacing device for an optical co-processor as well as for optical implementation of Hopfield-Anderson association and phase conjugation.

Original languageEnglish
Pages (from-to)591-606
Number of pages16
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 5 Feb 1990
Externally publishedYes
EventOptical Information Processing Systems and Architectures 1989 - San Diego, United States
Duration: 7 Aug 198911 Aug 1989

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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