Reference : Phase retarders in liquid crystals polymers
Scientific conferences in universities or research centers : Scientific conference in universities or research centers
Physical, chemical, mathematical & earth Sciences : Physics
Phase retarders in liquid crystals polymers
Piron, Pierre mailto [Université de Liège - ULiège > Département de physique > Optique - Hololab >]
Actions de Recherche Concertées (FOURTH MEETING) Space and Ground-Based Imaging in Astrophysics
22 mai 2012
[fr] biréfringence ; coronographie ; holographie de polarisation
[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.
Fonds pour la formation à la Recherche dans l'Industrie et dans l'Agriculture (Communauté française de Belgique) - FRIA

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