Switchable Zero Order Diffraction Gratings as Light Valves.
Semiannual rept. 1 Jan-30 Jun 83,
MASSACHUSETTS INST OF TECH CAMBRIDGE RESEARCH LAB OF ELECTRONICS
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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.
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