Implementation of pattern detction with polarization coding using bacterirorhodopsin film

摘要

A different image encoded by polarization coding generates a different polarization distribution on its Fourier plane. This fact enables to realize pattern detection with polarization. the method is reported better capability to discriminate gray-level images. It has been formerly reported that we have implemented the polarization coding and polarization spatial filter using liquid crystal spatial light modulators with phase modulation and optical rotatory power. In recent years the use of bacteriorhodopsin (BR) as a holographic recording material has been studied intensively. BR films are senitive to polarization because the BR is the photoinduced anisotropic material. In this paper, we propose the possibility of bacteriorhodopsin films for polarization spatial filter and investigate simplification of pattern detection system with polarization information.