Spectroscopic observation of the forward and backward IR emission of bacterirodopsin under broadband optical pumping
E.L. Terpugov*, O.V. Degtyareva* and V.V. Savranky**,
*Institute of Cell Biophysics, Russian Academy of Sciences, Institutskaya ul. 3, Pushchino, Moscow Region, 142290 Russia
**Natural Scienses Center of Prokhorov General Physics Institute RAS, 119991 GSP-1 Moscow, st. Vavilov, 38 bd. A-2.
Abstract
In this article, we present the emission spectra of wild-type bacterirodopsin in thin films on silicon, recorded in a “pump-probe” configuration, which show that the secondary IR emission stimulated by visible light propagates not only in the direction opposite to the exciting beam, but also in the forward direction. Time-resolved spectra provide information on the dynamics of the process. To excite the IR radiation of bacteriorhodpsin, a continuous light source, a 100 W xenon lamp, and an IR Fourier spectrophotometer were used to register secondary radiation in the mid IR range.
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Valeriy Vasilevich Savransky
Prokhorov General Physics Institute of the RAS
Russia
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