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Proceedings Paper

Bacteriorhodopsin overview of fundamentals and applications
Author(s): Serey Thai
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Paper Abstract

Bacteriorhodopsin (BR) is a light transducing photochromic protein in the purple membrane of a salt-loving microorganism that inhabits salt marshes. It has strong absorption in a broad region of the visible spectrum. The B- state in the photocycle can be considered to be the ground state, which has absorption maxima at 570 nm. Perhaps, the most intriguing features of this organic photopolymer are its extraordinary stability in the chemical, thermal and photochemical sense, its large optical nonlinearity, dynamic nature, durability, real-time holographic recording capabilities, and information storage potential. Furthermore, BR-doped polymer film can be fabricated for a large-scale application, whereas photorefractive crystals like BSO or KNSBM cannot be grown easily to the same dimension as BR. Hence, BR's potential in optical system includes transient dynamic applications of an M-type hologram and 3D optical memories of a branched photocycle that shows a great promise for data storage and retrieval due to its high capacity. The major advantages of this organic photopolymer include high density, low cost, low weight and portability which are a projected requirement for the Air Force and commercial applications.

Paper Details

Date Published: 26 July 1999
PDF: 7 pages
Proc. SPIE 3714, Enabling Photonic Technologies for Aerospace Applications, (26 July 1999); doi: 10.1117/12.354689
Show Author Affiliations
Serey Thai, Air Force Research Lab. (United States)

Published in SPIE Proceedings Vol. 3714:
Enabling Photonic Technologies for Aerospace Applications
Andrew R. Pirich; Edward W. Taylor, Editor(s)

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