A self amplifying optical pattern recognizer includes a geometric system configuration similar
to that of a Vander Lugt holographic matched filter configuration with a photorefractive …

An all-optical nonlinear joint transform correlator has been implemented for the first time
without using a spatial light modulator and digital processing in the Fourier plane. The …

A holographic imaging apparatus having a pulsed laser light source for generating an object
beam and a reference beam whereby an object, obscured by a diffusing medium, is …

5,359,565 A 10/1994 Takatori........ 365,105" Tbit/inch ferroelectric data storage based on
scanning nonlinear 5,359,726 A 10/1994 Thomas... 395,500 dielectric microscopy”, by Y …

There are disclosed an automatic focusing apparatus and an automatic focusing method for
an optical disk apparatus. The present automatic focusing apparatus comprises a light …

Edge enhancement of an input image by four-wave mixing a first write beam with a second
write beam in a photorefractive crystal, eg, GaAs, achieved for Van derLugt optical …

A time-resolved fluorescence microscope having high spatial and time resolution.
Fluorescence from a sample 26 mounted on a confocal inverted optical microscope 19 and …

(57) ABSTRACT A holographic data storage system includes a laser (12) for generating both
data and reference beams. The reference beam is deflected by an optic system such that the …

57 ABSTRACT A new photorefractive material comprises BaTiO double doped with two
dopant Species, both of which have at least two valence States, with one of the dopant …

A new type of optical correlator performs motion detection or background clutter suppression
and correlation simultaneously in a single photorefractive crystal, and is useful for moving …