Edge enhancement, a type of optical image processing, is performed in a photorefractive material in real time and with low incident-light intensities (10−3 W/cm2). We calculate the expected images using two different four-wave mixing geometries, which show good agreement with the images that we experimentally observe using a single-domain crystal of BaTiO3 as the photorefractive material.
© 1980 Optical Society of America
Original Manuscript: March 18, 1980
Revised Manuscript: May 12, 1980
Published: August 1, 1980
Jack Feinberg, "Real-time edge enhancement using the photorefractive effect," Opt. Lett. 5, 330-332 (1980)