Optical modulation system and frequency doubler using organo-sub

Details Optical modulation system and frequency doubler using organo-sub Optical modulation system and frequency doubler using organo-sub

1974-07-17

1976-04-06

Smith, Alfred E.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250225, 250229, 332 751, 350150, 350160R, G02F 103

Patent

active

039492249

ABSTRACT:
An optical modulation system and frequency doubler utilizes an organo-substituted carborane cell sandwiched between a pair of crossed polarizers. Light passing through the cell is rotated an amount determined by an electrical control signal applied across the cell. Hence the amount of light passing through the system is modulated by the control signal. When the cell is modulated by an AC control signal, light modulation occurs at twice the AC control signal frequency since the cell has two possible orientations which permit maximum light transfer. The modulated light is directed upon an electro-optical transducer which produces an electrical output proportional to the intensity of the light impinging thereupon.

REFERENCES:
patent: 2560430 (1951-07-01), Friend
patent: 3069973 (1962-12-01), Ames
patent: 3711180 (1973-01-01), Klingen et al.
patent: 3740118 (1973-06-01), Land et al.
patent: 3747022 (1973-07-01), Nanamatsu et al.
patent: 3796479 (1974-03-01), Helfrich et al.

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