Scientific conference in universities or research centers (Scientific conferences in universities or research centers)
Phase retarders in liquid crystals polymers
Piron, Pierre
2012
 

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Keywords :
biréfringence; coronographie; holographie de polarisation
Abstract :
[en] Liquid crystals polymers posses birefringent properties and they are locally orientable, they allow the realization of space variant optical retarders which creates non uniformly polarized beam. To realize a retarder, liquid crystals are exposed to a UV linearly polarized beam, the optical axis of the retarder will be parallel to the incident polarization. We shall present an innovative way to produce space-variant retarders without mechanical interaction polarization holography . Superposing several beams differently polarized, results in a non-uniformly polarized recording beam used to realize space variant retarders. We shall also present our research retarders for two applications based on this method polarization analysis and coronagraphy.
Research center :
Hololab
Disciplines :
Physics
Author, co-author :
Piron, Pierre ;  Université de Liège - ULiège > Département de physique > Optique - Hololab
Language :
English
Title :
Phase retarders in liquid crystals polymers
Publication date :
12 March 2012
Event name :
Actions de Recherche Concertées (FOURTH MEETING) Space and Ground-Based Imaging in Astrophysics
Event date :
22 mai 2012
Funders :
FRIA - Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture [BE]
Available on ORBi :
since 23 May 2012

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