Direct pattern recognition of a motion picture by hole-burning holography of Eu↑(3+):Y↓(2)SiO↓(5)

摘要

We propose and demonstrate a novel technique for direct pattern recognition of motion pictures frequency- and spatial-domain holography using a cryogenic Eu↑(3+):Y↓(2)SiO↓(5) crystal. The fast holeburning speed of the crystal allows a moving image to be continuously recorded in it by a frequency-scanned laser. Using Fourier transform holography permitted direct pattern recognition of a stored in the crystal to be realized. The correlation spot continuously followed the moving object with the same time resolution (10 ms) as the reproduced movie. # 1997 Optical Society of America