Metal Film Light Modulator.
Patent, Filed 14 Jul 86, patented 7 Jun 88,
DEPARTMENT OF THE AIR FORCE WASHINGTON DC
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An improved device for modulating the intensity of a light beam is described which comprises a first isoceles optical prism a first dielectric layer, a thin metallic layer, and a second dielectric layer substantially identical in composition and thickness to the first dielectric layer deposited successively on the base of the first prism a second isoceles optical prism disposed with the base thereof contacting the last deposited layer and a controllable source of electrical current connected to the metallic layer for establishing and modulating an electro-magnetic field at the respective surfaces of the metallic layer. Patents. rh