Reference : Polarization holography for vortex retarders recording: laboratory demonstration
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
Polarization holography for vortex retarders recording: laboratory demonstration
Piron, Pierre mailto [Université de Liège > Département de physique > Optique - Hololab >]
Blain, Pascal mailto [Université de Liège > > CSL (Centre Spatial de Liège) >]
Décultot, Marc mailto [Université de Liège > Département de physique > Optique - Hololab >]
Mawet, Dimitri []
Habraken, Serge mailto [Université de Liège > Département de physique > Optique - Hololab >]
Applied Optics
Optical Society of America
Yes (verified by ORBi)
[en] holography ; polarization ; liquid crystal
[en] This paper will present a prototype of the first set of vortex retarders made of liquid crystal polymers recorded by
polarization holography. Vortex retarders are birefringent plates characterized by a rotation of their fast axis.
Liquid crystals possess birefringent properties and they are locally orientable. Their orientation is defined by
the perpendicular to the local orientation of the recording field. Polarization holography is a purely optical recording
method. It is based on the superimposition of coherent and differently polarized beams. It is used to shape
the electric field pattern to enable the recording of vortex retarders. The paper details the mathematical model of
the superimposition process. The recording setup is exposed; it is characterized by a nearly common path interferometer.
Two sets of measurements allowing the prediction of the retarder’s features are presented and compared.
Finally, the experimentally recorded retarder is shown, its characteristics are investigated and compared to
the predicted ones.
Fonds pour la formation à la Recherche dans l'Industrie et dans l'Agriculture (Communauté française de Belgique) - FRIA
© 2015 Optical Society of America.]. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.
FP7 ; 337569 - VORTEX - Taking extrasolar planet imaging to a new level with vector vortex coronagraphy

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