Multiwave mixing in bacteriorhodopsin Langmuir-Blodgett films

Weichong Du; Xianmin Zhang; S. Z. Can; Yanbin Zhu; Shong Hao Liu; Kangsheng Chen; Q. G. Li

doi:10.1117/12.144056

27 April 1993 Multiwave mixing in bacteriorhodopsin Langmuir-Blodgett films

Weichong Du, Xianmin Zhang, S. Z. Can, Yanbin Zhu, Shong Hao Liu, Kangsheng Chen, Q. G. Li

Proceedings Volume 1853, Organic and Biological Optoelectronics; (1993) https://doi.org/10.1117/12.144056
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

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.

Citation Download Citation

Weichong Du, Xianmin Zhang, S. Z. Can, Yanbin Zhu, Shong Hao Liu, Kangsheng Chen, and Q. G. Li "Multiwave mixing in bacteriorhodopsin Langmuir-Blodgett films", Proc. SPIE 1853, Organic and Biological Optoelectronics, (27 April 1993); https://doi.org/10.1117/12.144056

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