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cc-by-nc-nd (c) Elsevier, 2018
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/124679

Partially-coherent spirally-polarized gradual-edge imaging

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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.

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PÉREZ AVIÑOA, Marcos, MARTÍNEZ-HERRERO, Rosario, VALLMITJANA I RICO, Santiago, LATORRE-CARMONA, Pedro, JUVELLS PRADES, Ignacio, CARNICER GONZÁLEZ, Arturo. Partially-coherent spirally-polarized gradual-edge imaging. _Optics and Lasers in Engineering_. 2018. Vol. 112, núm. 53-58. [consulta: 24 de gener de 2026]. ISSN: 0143-8166. [Disponible a: https://hdl.handle.net/2445/124679]

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