Combining average molecular tilt and flicker for management of depolarized light in parallel-aligned liquid crystal devices for broadband and wide-angle illumination

We demonstrate a complete semiphysical and analytical model describing the angular and wavelength dependencies not only of retardance, but also its flicker, in parallel aligned liquid crystal (PA-LC) devices. It relies on the fitting of the molecules' equivalent tilt angle as a function of appl...

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Bibliographic Details
Published in:Optics express 2019-02, Vol.27 (4), p.5238-5252
Main Authors: Márquez, Andrés, Martínez-Guardiola, Francisco J, Francés, Jorge, Gallego, Sergi, Pascual, Inmaculada, Beléndez, Augusto
Format: Article
Language:English
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Summary:We demonstrate a complete semiphysical and analytical model describing the angular and wavelength dependencies not only of retardance, but also its flicker, in parallel aligned liquid crystal (PA-LC) devices. It relies on the fitting of the molecules' equivalent tilt angle as a function of applied voltage. The wide range of calculations it offers without requiring extensive characterization makes the model unique. We focus on PA-LCoS application as a polarization state generator across the visible spectrum and for a wide range of incidence angles. This approach offers novel capabilities for managing arbitrary states of both full and partial polarization. To highlight the richness of situations with PA-LCoS devices, we provide results for two different digital addressing sequences producing different levels of flicker.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.27.005238