111. Optical image correlation in photorefractive mesogenic composites, A. Emoto, H. Ono and N. Kawatsuki, Advances in Technology of Materials and Materials Processing, 7 (2005) 215-217.


We demonstrated optical image correlation by means of Fourier transform hologram in the region of Raman-Nath diffraction on to photorefractive mesogenic composites film. Interference field of two Fourier-transformed imaging beams induce periodically molecular reorientation: holographic phase gratings. The reconstructed image is obtained as a result of a spatial correlation between the two optical images. In this work we applied correlation output between two optical images for pattern classification and/or detection axxroding to the self-diffraction. The proposed optical correlation was confirmed with an example of a pattern in the experiments.

Free Access