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Proceedings Paper

Multiwave mixing in bacteriorhodopsin Langmuir-Blodgett films
Author(s): Weichong Du; Xianmin Zhang; S. Z. Can; Yanbin Zhu; Shong Hao Liu; Kangsheng Chen; Q. G. Li
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Paper Abstract

We report an observation of optical phase conjugate and high-order diffractions from degenerate multi-wave mixing in LB films of pure purple membrane for the first time. Based on the simplified BR photocycle, a model that describes the high-order diffractions from the population gratings versus the total incident intensity has been developed. The saturated absorption intensity and the saturated nonlinear refractive index of the LB films have been estimated by fitting method to be 0.42 W/cm2, and 5 X 10-2 cm2W, respectively. The typical response time of its nonlinearity is about several milliseconds.

Paper Details

Date Published: 27 April 1993
PDF: 9 pages
Proc. SPIE 1853, Organic and Biological Optoelectronics, (27 April 1993); doi: 10.1117/12.144056
Show Author Affiliations
Weichong Du, South China Normal Univ. (Canada)
Xianmin Zhang, Zhejiang Univ. (China)
S. Z. Can, South China Normal Univ. (China)
Yanbin Zhu, South China Normal Univ. (China)
Shong Hao Liu, South China Normal Univ. (China)
Kangsheng Chen, Zhejiang Univ. (China)
Q. G. Li, Fudan Univ. (China)

Published in SPIE Proceedings Vol. 1853:
Organic and Biological Optoelectronics
Peter M. Rentzepis, Editor(s)

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