Title :
Optical correlation in Bi12SiO20 at 632.8 nm
Author :
Petts, C.R. ; McCall, M.W. ; Laycock, L.C.
Author_Institution :
GEC Research Laboratories, Hirst Research Centre, Wembley, UK
Abstract :
Optical image correlation with a low-power HeNe laser has been demonstrated using the phenomenon of degenerate four-wave mixing in Bi12SiO20. Preliminary results for character recognition, using a compact two-dimensional image processor, are presented.
Keywords :
bismuth compounds; correlators; electro-optical devices; optical character recognition; optical phase conjugation; pattern recognition; picture processing; 632.8 nm; Bi12SiO20; He-Ne laser; OCR; character recognition; degenerate four-wave mixing; electrooptical devices; nonlinear optics; optical image correlator; picture processing; two-dimensional image processor;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19840023
