Document Detail


Holographic grating stability: influence of 4,4'-azobis (4-cyanopentanoic acid) on various spatial frequencies.
MedLine Citation:
PMID:  24085094     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
This paper presents the results obtained when holographic gratings were stored with a spatial frequency of 954 and 2663  lines/mm in transmission geometry and 4600  lines/mm in reflection geometry in a polyvinyl alcohol/acrylamide-based material. Photopolymers are materials that give good results at low frequencies, but their diffraction efficiency (DE) decreases at high frequencies. A chain transfer agent, 4,4<sup>'</sup>-azobis (4-cyanopentanoic acid) (ACPA) was incorporated in the material composition to improve spatial resolution. Furthermore, a curing process was applied to the stored gratings in order to maintain the DE stable over time. The DE and shrinkage for symmetric holographic transmission and reflection gratings were measured to evaluate their quality and quantify the improvement produced by ACPA.
Authors:
E Fernández; R Fuentes; M Ortuño; A Beléndez; I Pascual
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Publication Detail:
Type:  JOURNAL ARTICLE    
Journal Detail:
Title:  Applied optics     Volume:  52     ISSN:  1539-4522     ISO Abbreviation:  Appl Opt     Publication Date:  2013 Sep 
Date Detail:
Created Date:  2013-10-2     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0247660     Medline TA:  Appl Opt     Country:  -    
Other Details:
Languages:  ENG     Pagination:  6322-6331     Citation Subset:  -    
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