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. 2005 Dec 15;30(24):3308-10.
doi: 10.1364/ol.30.003308.

Optical vortex coronagraph

Gregory Foo  1 , David M Palacios, Grover A Swartzlander Jr
Affiliations

Optical vortex coronagraph

Gregory Foo et al. Opt Lett. .

Abstract

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.

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