Generalized model for all-optical light modulation in bacteriorhodopsin

Roy, Sukhdev and Singh, CP and Reddy, KPJ (2001) Generalized model for all-optical light modulation in bacteriorhodopsin. In: Journal of Applied Physics, 90 (8). pp. 3679-3688.

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Abstract

We present a generalized model for the photochemical cycle of bacteriorhodopsin bR protein molecule. Rate equations have been solved for the detailed light-induced processes in bR for its nine states: $(B\rightarrow K \leftrightarrow L \leftrightarrow M^I \rightarrow (M^{II}) \leftrightarrow N \leftrightarrow$ $O \leftrightarrow P \rightarrow Q \rightarrow B)$. The complete steady-state intensity-induced population densities in various states of the molecule have been computed to obtain a general, exact, and analytical expression for the nonlinear absorption coefficient for multiple modulation pump laser beams. All-optical light modulation of different probe laser beam transmissions by intensity induced population changes due to one and two modulation laser beams has been analyzed. The proposed model has been shown to accurately model experimental results.

Item Type: Journal Article Copyright of this article belongs to American Institute of Physics. Division of Mechanical Sciences > Aerospace Engineering (Formerly, Aeronautical Engineering) 18 Sep 2008 08:13 19 Sep 2010 04:49 http://eprints.iisc.ernet.in/id/eprint/15903