Document Detail

Bacteriorhodopsin films as spatial light modulators for nonlinear-optical filtering.
MedLine Citation:
PMID:  19774027     Owner:  NLM     Status:  In-Data-Review    
The application of dry purple membrane films for nonlinear-optical filtering is described. The biological photochrome bacteriorhodopsin (BR) is contained in the purple membrane (PM) from Halobacterium halobium. BR has two dominant photoactive states, B and M, which have well-separated absorption bands with maxima at 570 nm (B) and 412 nm (M). Since the local transmission of a PM film depends on the ratio between the forward (B ? M) and the backward (M ? B) photoreactions, PM films can be used as light-controlled absorptive spatial light modulators. A model describing the nonlinear transmission of PM films containing the wild-type form of BR or one of its mutated variants, e.g., BR(D96N), and examples of their application in spatial filtering, e.g., edge enhancement, are presented.
R Thoma; N Hampp; C Bräuchle; D Oesterhelt
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Optics letters     Volume:  16     ISSN:  0146-9592     ISO Abbreviation:  Opt Lett     Publication Date:  1991 May 
Date Detail:
Created Date:  2009-09-23     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7708433     Medline TA:  Opt Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  651-3     Citation Subset:  -    
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