Intensity-dependent refractive index of chemically enhanced bacteriorhodopsin

Qi Wang Song; Chunping Zhang

doi:10.1117/12.182077

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5 August 1994 Intensity-dependent refractive index of chemically enhanced bacteriorhodopsin

Qi Wang Song; Chunping Zhang

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Proceedings Volume 2321, Second International Conference on Optoelectronic Science and Engineering '94; (1994) https://doi.org/10.1117/12.182077
Event: Optoelectronic Science and Engineering '94: International Conference, 1994, Beijing, China

Abstract

The intensity-dependent refractive index of a chemically enhanced bacteriorhodopsin film is shown to be composed of two components. The first arises from the shift in absorption band accompanying the bR ->M phototransformation and follows the predictions made by the Kramers-Kronig transfonnation. An additional modulation is observed at high laser intensities and is the likely result of a thermal lensing effect induced by laser heating. This study provides for the first time new insight and quantitative descriptions of the regimes of the refractive index modulation in bacteriorhodopsin and is helpful in understanding the potential use of the BR refractive index modulation in optical applications.

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Qi Wang Song and Chunping Zhang "Intensity-dependent refractive index of chemically enhanced bacteriorhodopsin", Proc. SPIE 2321, Second International Conference on Optoelectronic Science and Engineering '94, (5 August 1994); https://doi.org/10.1117/12.182077

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