Partially-coherent spirally-polarized gradual-edge imaging
Scholar | Other documents of the author: Pérez-Aviñoa, Marcos; Martínez-Herrero, Rosario; Vallmitjana, Santiago; Latorre Carmona, Pedro; Juvells, Ignasi; Carnicer, Artur
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TitlePartially-coherent spirally-polarized gradual-edge imaging
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 ... [+]
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. [-]
Bibliographic citationPÉREZ-AVIÑOA, Marcos, et al. Partially-coherent spirally-polarized gradual-edge imaging. Optics and Lasers in Engineering, 2019, vol. 112, p. 53-58.