Programmable optical correlator

Details Programmable optical correlator Programmable optical correlator

1990-09-10

1993-08-03

Smith, Jerry

Boots, shoes, and leggings

359559, 359561, 359560, G03B 116, G02B 2742

Patent

active

052335542

ABSTRACT:
An optical correlation system employing the degenerate four wave mixing uses cross-polarized pump and probe beams to prevent the writing of a volume transmission phase hologram in a photorefractive crystal having an applied electric field parallel to the optic axis of the system, so that system response does not depend on the time required to write or erase such a transmission hologram.

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"Storage of Holograms in a Ferroelectric Photoconductor Device", Applied Physics Letters, Aug. 18, 1970, vol. 17, No.4, S. A. Keneman et al.

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