System and method for encoding information onto an optical beam

Details System and method for encoding information onto an optical beam System and method for encoding information onto an optical beam

1986-03-21

1988-08-30

LaRoche, Eugene R.

Coherent light generators

Particular component circuitry

Optical pumping

350356, 350393, 350 362, 372 21, 372 26, G03H 102, G02B 523, G02F 101, H01S 310

Patent

active

047671955

ABSTRACT:
A system and method for encoding information onto an optical beam is described in which a photorefractive material is used to modulate the beam. An alternating electric field is applied to the photorefractive material and modulated so as to vary the material's index ellipsoid via the electro-optic effect and hence modulate an output beam in accordance with the information to be encoded. The invention has applications to both externally pumped and self-pumped phase conjugate mirrors, and to other optical systems. Various modulation techniques can be used, and the modulation can be isolated from noisy beams by applying the modulating electric field on a high frequency carrier.

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