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Proceedings Paper

Optimal control of the isomerization yield in bacteriorhodopsin using tailored light pulses
Author(s): Valentyn I. Prokhorenko; Andrea M. Nagy; Leonid S. Brown; R. J. Dwayne Miller
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Paper Abstract

The all-trans to 13-cis isomerization of the retinal chromophore in bacteriorhodopsin (bR) plays an essential role in Nature (e.g., in photosynthesis of halobacteria). bR is a candidate for optical nanodevices driven by laser pulses, and a prospective material for optical memory storage devices and photoswitches. From the viewpoint of possible applications of bR in nanodevices we performed an experimental study of the isomerization yield by excitation with tailored laser pulses, using a coherent control approach. With specially shaped excitation pulses (found in optimization experiments) we are able to manipulate the 13-cis yield in bR over an absolute range of 60% (30% enhancement as well as 30% suppression in comparison to excitation with a transform-limited pulse) while keeping the absorbed excitation energy at a constant level.

Paper Details

Date Published: 30 September 2005
PDF: 11 pages
Proc. SPIE 5971, Photonic Applications in Nonlinear Optics, Nanophotonics, and Microwave Photonics, 59710K (30 September 2005); doi: 10.1117/12.629963
Show Author Affiliations
Valentyn I. Prokhorenko, Univ. of Toronto (Canada)
Andrea M. Nagy, Univ. of Toronto (Canada)
Leonid S. Brown, Univ. of Guelph (Canada)
R. J. Dwayne Miller, Univ. of Toronto (Canada)

Published in SPIE Proceedings Vol. 5971:
Photonic Applications in Nonlinear Optics, Nanophotonics, and Microwave Photonics
Roberto A. Morandotti; Harry E. Ruda; Jianping Yao, Editor(s)

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