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Título:	Partially-coherent spirally-polarized gradual-edge imaging
Autor/a:	Pérez Aviñoa, Marcos; Martínez-Herrero, Rosario; Vallmitjana i Rico, Santiago; Latorre-Carmona, Pedro; Juvells Prades, Ignacio; Carnicer González, Arturo
Otros autores:	Universitat de Barcelona
Abstract:	In this work we develop a partially-coherent spirally-polarized imaging system for generating gradual edge detection images. A rotating diffuser is used for producing illumination sources with tunable degree of coherence. Using a 4f configuration, the frequency content of the image is modified by means of a vortex half-wave retarder as a spatial filter. Accordingly, we analytically describe a spirally-polarized imaging system illuminated with a Gauss-Schell source using paraxial coherence-polarization theory. Numerical simulations and experimental results demonstrate the validity of our approach. We use a referenceless spatial content descriptor to assess the quality of the recorded images as a function of the coherence state of the source.
Materia(s):	-Òptica de Fourier -Coherència (Òptica) -Polarització (Llum) -Fourier optics -Coherence (Optics -Polarization (Light)
Derechos:	cc-by-nc-nd (c) Elsevier, 2018 info:eu-repo/semantics/embargoedAccess http://creativecommons.org/licenses/by-nc-nd/3.0/es
Tipo de documento:	Artículo Artículo - Versión aceptada
Editor:	Elsevier
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