Photorefractive laser beamsteering device

Details Photorefractive laser beamsteering device Photorefractive laser beamsteering device

1982-01-11

1985-04-02

Arnold, Bruce Y.

350355, G02F 129

Patent

active

045084319

ABSTRACT:
Apparatus for steering a principal beam of electromagnetic radiation consisting of a photorefractive material situated such that the principal beam of radiation passes therethrough, the material being photoconductive and having an index of refraction that is variable in response to transverse electro-optical effects; and variable writing means for irradiating the material in a direction orthogonal to the principal beam with two beams which intersect at a variable angle so as to write a diffraction grating in the material and thereby vary the index of refraction of the material, thus steering the principal beam.

REFERENCES:
patent: 3539244 (1970-11-01), Marks
patent: 3790252 (1974-02-01), Pao

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