Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10146544 | Optics and Lasers in Engineering | 2019 | 6 Pages |
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.
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Authors
Marcos Pérez-Aviñoa, Rosario MartÃnez-Herrero, Santiago Vallmitjana, Pedro Latorre-Carmona, Ignasi Juvells, Artur Carnicer,