Observatoire de Paris Institut national de recherche scientifique français Univerité Pierre et Marie Curie Université Paris Diderot - Paris 7

Progress on Scalar Vortex Coronagraphs : an alternative for direct imaging

vendredi 17 juin 2022, par Niyati Desai (California Institute of Technology)

Jeudi 23 juin 2022 à 16h00 , Lieu : Salle de rĂ©union du bâtiment 16 et visioconfĂ©rence

The direct imaging and characterization of Earth-like exoplanets around Sun-like stars to be carried out by future flagship missions such as HabEx and LUVOIR, depends on the ability of coronagraphs to achieve contrasts on the order of 10-10 at close angular separations and over large bandwidths ( 20%). Vector Vortex Coronagraphs (VVCs) have recently demonstrated 2e-9 raw contrast in broadband light but have several limitations due to their polarization dependent properties. In this seminar I will present progress thus far on exploring the potential for scalar vortex coronagraphs (SVCs) as a viable solution.