The interference of two coherent images with a controlled phase difference between them is shown by using four-wave mixing in fluorescein-dye-doped boric acid glass and a liquid-crystal television spatial light modulator. We present results showing the digital optical exclusive or operation with milliwatt optical power and an output that is compatible with CCD camera sensitivities.
© 1992 Optical Society of America
Original Manuscript: March 28, 1991
Published: July 10, 1992
S. A. Boothroyd, L. Chan, P. H. Beckwith, and J. Chrostowski, "Optical image subtraction in fluorescein-doped boric acid glass," Appl. Opt. 31, 4004-4009 (1992)