Optical: systems and elements – Holographic system or element – Using modulated or plural reference beams
Patent
1997-07-14
1998-05-19
Dzierzynski, Paul M.
Optical: systems and elements
Holographic system or element
Using modulated or plural reference beams
359 7, 359 22, 365125, G03H 110
Patent
active
057543186
ABSTRACT:
Apparatus for the simultaneous parallel recording of holograms on a dynamic volume medium. Directed along a recording axis is a polychromatic source image which has multiple component images to be recorded in the dynamic volume medium. Each component image of the polychromatic source image has a separate frequency. Directed along a reference axis is a polychromatic reference beam having a plurality of monochromatic reference components with each reference component having a separate wavelength. Positioned upstream from the volume on the reference axis is a prism which angularly multiplexes the reference components to provide a plurality of monochromatic reference beams which are directed at angular offsets from the reference axis to the medium. Each of the reference beams has a wavelength which is identical to the wavelength of only one of the monochromatic component images of the polychromatic source image. Each of the reference beams arrives at the dynamic volume medium at a different angle of incidence from an adjacent monochromatic reference beam because of the dispersion of the monochromatic reference components by the prism. This dispersion of the reference beam provides for the simultaneous parallel recording of holograms at a plurality of locations within the medium.
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Adaptive Optical Networks Using Photorefractive Crystals, Psaltis et al, lied Optics, vol. 27, No. 9 Apr. 1, 1988.
Elements of a Unique Bacteriorhopsin Neural Network Architecture, Lewis et al, Applied Optics, vol. 30, No. 5 Feb. 10, 1991.
Dzierzynski Paul M.
Kalmbaugh David S.
Schuberg Darren E.
Sliwka Melvin J.
The United States of America as represented by the Secretary of
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