Photodichroic readout device using circularly polarized light

Communications: electrical – Digital comparator systems

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340173LM, G11C 1142, G11C 1304

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active

039342344

ABSTRACT:
A unique photodichroic readout device composed of photodichroic material u which is passed a circularly polarized light beam that is horizontally or vertically polarized dependent upon the storage of information in the material. The beam is then passed to a beam splitter which segregates the horizontal polarized light and the vertical polarized light. The two individual beams pass to individual detectors whose output is coupled to a difference amplifier. The system also provides a method for selectively storing information within the photodichroic material.

REFERENCES:
patent: 3396266 (1968-08-01), Max
patent: 3580688 (1971-05-01), Schneider
patent: 3693172 (1972-09-01), Feldtkeller

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