3 papers
physics.optics2016
A Mach-Zehnder interferometer based on orbital angular momentum for improved vortex coronagraph efficiency
P. Piron, C. Delacroix, E. Huby +5
The Annular Groove Phase Mask (AGPM) is a vectorial vortex phase mask. It acts as a half-wave plate with a radial fast axis orientation operating in the mid infrared domain. When p…
astro-ph.IM2016
Mid-IR AGPMs for ELT applications
Brunella Carlomagno, Christian Delacroix, Olivier Absil +8
The mid-infrared region is well suited for exoplanet detection thanks to the reduced contrast between the planet and its host star with respect to the visible and near-infrared wav…
astro-ph.IM2016
The VORTEX coronagraphic test bench
Aissa Jolivet, Pierre Piron, Elsa Huby +5
In this paper, we present the infrared coronagraphic test bench of the University of Liège named VODCA (Vortex Optical Demonstrator for Coronagraphic Applications). The goal of the…