  In this paper, we present the infrared coronagraphic test bench of the
University of Li\`ege named VODCA (Vortex Optical Demonstrator for
Coronagraphic Applications). The goal of the bench is to assess the
performances of the Annular Groove Phase Masks (AGPMs) at near- to mid-infrared
wavelengths. The AGPM is a subwavelength grating vortex coronagraph of charge
two (SGVC2) made out of diamond. The bench is designed to be completely
achromatic and will be composed of a super continuum laser source emitting in
the near to mid-infrared, several parabolas, diaphragms and an infrared camera.
This way, we will be able to test the different AGPMs in the M, L, K and H
bands. Eventually, the bench will also allow the computation of the incident
wavefront aberrations on the coronagraph. A reflective Lyot stop will send most
of the stellar light to a second camera to perform low-order wavefront sensing.
This second system coupled with a deformable mirror will allow the correction
of the wavefront aberrations. We also aim to test other pre- and/or
post-coronagraphic concepts such as optimal apodization.
