Optical vortex coronagraph.
We describe a method to observe dim exoplanets that eliminates light from the parent star across the entire exit pupil without sacrificing light from the planet by use of a vortex mask of topological charge m = 2.
Foo
Gregory
G
College of Optical Sciences, University of Arizona, Tucson, Arizona 85721, USA.
Palacios
David M
DM
Swartzlander
Grover A
GA