Patent
1985-07-25
1989-06-27
Miller, Stanley D.
357 15, G02F 1133, H01L 2148
Patent
active
048423769
ABSTRACT:
A double Schottky diode light valve (5) includes a liquid crystal (80) for locally modulating a beam (120) by polarization rotation to produce a modulated beam (121), and a photoconductor (40) located adjacent the liquid crystal (80) for receiving and absorbing a second beam (110). The photoconductor (40) controls the polarization responsively to the optical content of the second beam (110). The photoconductor (46) includes a semiconductor substrate and a pair of Schottky diodes (60/40, 30/40) disposed on opposing sides of the substrate. The absorption of the second beam (110) by the substrate (40) produces photogenerated majority carriers. The pair of Schottky diodes (60/40, 30/40) maintain the substrate (40) substantially depleted of such carriers and also reflects the modulated beam back through the liquid crystal.
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Braatz Paul O.
Efron Uzi
Duraiswamy V. D.
Hughes Aircraft Company
Karambelas A. W.
Lewis David
Miller Stanley D.
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