Low-order aberration sensitivity of an optical vortex coronagraph.
We describe a high-contrast imaging technique capable of directly measuring light from a terrestrial planet by using a vortex mask of topological charge m = 5. We demonstrate that this technique is relatively insensitive to low-order aberrations and compare its performance to that of a band-limited Lyot coronagraph.
Palacios
David M
DM
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109, USA. David.M.Palacios@jpl.nasa.gov
Hunyadi
Sarah L
SL