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TecnOPTO (Grupo de Tecnologias Ópticas y Optoelectronicas) is the Group of Optics and Optoelectronic Technologies at University Miguel Hernández, in Elche, Spain.
Our group develops different research lines, all within the field of Physical Optics and Optolectronics. We are located at the University Miguel Hernández, in the beautiful city of Elche, in Spain.
We enjoy doing research and working in projects with collaborators all over the world. We also enjoy teaching and involving our students in our projects.
Our last work is now published in the journal Results in Physics entitled Polarization and coherence properties of the diffraction by a double retarder rectangular aperture. In this work we analyze the diffraction of a rectangular aperture with different retarders on each half. Under polarized illumination, it generates a structured polarization in the diffracted field. Using the combined Fourier transform Jones (FTJ) matrix and beam-coherence-polarization (BCP) matrix formalism, we also show that even when the aperture is illuminated with unpolarized light, and the field therefore remains unpolarized right after the aperture, the diffracted field yet exhibits a polarization and spatial coherence structure.
Experimental verification is conducted using a LCOS-SLM to encode the double retarder. The experimental system is completed with a second LCOS-SLM to implement a digital double-slit experiment. This enables to measure the scalar complex degree of coherence and shows that the double-retarder aperture can generate spatially-structured scalar coherence patterns
under unpolarized illumination.
This work is part of the PhD Thesis of Santiago Ríos-Álvarez.
