Abstract

We propose a new novelty optical filter that uses a bacteriorhodopsin film. This filter is based on the time-dependent nonlinear diffraction efficiency of real-time holograms recorded in the film. As soon as the signal beam carrying a pattern is diffracted by the polarization hologram recorded in the bacteriorhodopsin film, it begins to erase the hologram and suppresses the diffraction of the beam at the position of the stationary part of the pattern. This filter enhances only leading edges of moving patterns. In this system undesired scattered light, which is orthogonally polarized to the diffracted beam, is discriminated by a polarizer.

© 1997 Optical Society of America

Optical novelty filter using bacteriorhodopsin film

Chunping Zhang, Guiying Chen, Xuan Wei, Zongxia Guo, Jianguo Tian, Xingyu Wang, Guangyin Zhang, and Q. Wang Song
Opt. Lett. 30(1) 81-83 (2005)

Relationship between parameters of bacteriorhodopsin film and behavior of optical novelty filters

Guiying Chen, Chunping Zhang, Zongxia Guo, Tang Xu, Xin Liang, Xinyu Wang, Jianguo Tian, and Q. Wang Song
Appl. Opt. 44(30) 6373-6379 (2005)

Optical wavelet-matched filtering with bacteriorhodopsin films

Xiandong Chen, Xianmin Zhang, Kangsheng Chen, and Qingguo Li
Appl. Opt. 36(32) 8413-8416 (1997)

Real-time enhancement of defects in periodic patterns by use of a bacteriorhodopsin film

Takayuki Okamoto, Ichirou Yamaguchi, and Kenji Yamagata
Opt. Lett. 22(5) 337-339 (1997)

Programmable spatial filtering with bacteriorhodopsin

M. Storrs, D. J. Mehrl, and J. F. Walkup
Appl. Opt. 35(23) 4632-4636 (1996)