Accession Number : ADA264200


Title :   Photorefractive Integrators and Correlators


Descriptive Note : Rept. for Oct 90-Sep 92,


Corporate Author : ROME LAB ROME NY


Personal Author(s) : Brost, George A


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a264200.pdf


Report Date : Dec 1992


Pagination or Media Count : 85


Abstract : The use of photorefractive crystals as optically addressed time integrating spatial light modulators in acousto-optic signal processing applications was examined. Nonstationary recording techniques of alternating electric fields and moving fringe patterns were investigated in detail. A finite difference technique was used to model grating formation characteristics. Photorefractive Bi12SiO20 and BaTiO3 crystals were tested experimentally in an adaptive acousto-optic processor. These results demonstrated the feasibility of using photorefractives for such applications.... Photorefractive, Acousto-optic processor.


Descriptors :   *ELECTRIC FIELDS , *ACOUSTOOPTICS , *LIGHT MODULATORS , SIGNAL PROCESSING , OPTICS , ELECTROOPTICS , ILLUMINATION , HOLOGRAPHY , ARGON LASERS , SPACE CHARGE , BARIUM TITANATES , PATTERNS , GRATINGS(SPECTRA) , CRYSTALS , MODELS , LIGHT


Subject Categories : Acoustooptic and Optoacoustic Devices
      Optics


Distribution Statement : APPROVED FOR PUBLIC RELEASE