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Group Leader: Bruno Piccirillo |
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We are interested in studying dielectric and morphologic properties of materials by exploiting polarization and wavefront analyses in the Visible and Infrared domain. At fundamental level, this entails in-depth investigation of the mechanisms underpinning the optical spin and orbital angular momentum transfer between light and matter. The research activities within this line mainly include:
examples include q-plates (azimuthal waveplates with a topological singularity at their center), L-plates, polarization-switchable lenses, Modulated Poincaré Beam (MPB) generators and so on; iii. methods and devices for wavefront sensing based on geometric phase, such as Geometric Phase Shearing Interferometry (GPSI) in several geometries: linear shearing, based on either 𝜦-plates (prism-like plates) or cylindrical lenses; radial shearing, based on either 𝜸-Plates (axicon-like) or spherical lenes, just to mention a few;
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Publications Geometric-phase waveplates for free-form dark hollow beams Electrically tunable vector vortex coronagraphs based on liquid-crystal geometric phase waveplates Shearing interferometry via geometric phase Q-plate technology: a progress review Monstar polarization singularities with elliptically-symmetric q-plates Flat polarization-controlled cylindrical lens based on the Pancharatnam-Berry geometric phase |
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