Accession Number : ADA133010

Title :   Switchable Zero Order Diffraction Gratings as Light Valves.

Descriptive Note : Semiannual rept. 1 Jan-30 Jun 83,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE RESEARCH LAB OF ELECTRONICS

Personal Author(s) : Melngailis,John

PDF Url : ADA133010

Report Date : 30 Jun 1983

Pagination or Media Count : 4

Abstract : The motivation of this work is to produce line-addressable arrays of independently switchable light valves for flat-panel video displays. In addition, such light valves would be useful as spatial light modulators in optical signal processing. The principle of the light valves is based on the switching of the zero order of diffraction. Two gratings are fabricated face-to-face and displaced with respect to one another by half of one period. The displacement may be produced by using the strong piezoelectric properties of PVF2 or, alternatively, by using electrostatic forces. The goal of this project is to build a fast, lockable, miniature light valve which is compatible with fabrication into arrays.

Descriptors :   *Light sources, *Value, *Electric switches, *Gratings(Spectra), Display systems, Video signals, Optical processing, Fabrication, Polyvinylidenes, Fluoropolymers, Arrays, Diffraction, Electrostatics

Subject Categories : Electrical and Electronic Equipment
      Test Facilities, Equipment and Methods
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE