title: Astronomical demonstration of an optical vortex coronagraph.
abstract: Using an optical vortex coronagraph and simple adaptive optics techniques, we have made the first convincing demonstration of an optical vortex coronagraph that is coupled to a star gazing telescope. We suppressed by 97% the primary star of a resolvable binary system, Cor Caroli. The stars had an angular separation of 1.9lambda/D at our imaging camera. The secondary star suffered no suppression from the vortex lens.
authors.affiliation: College of Optical Sciences, University of Arizona, Tucson, Arizona 85721, USA. grover.swartzlander@gmail.com
authors.forename: Grover A
authors.initials: GA
authors.lastname: Swartzlander
authors.forename: Erin L
authors.initials: EL
authors.lastname: Ford
authors.forename: Rukiah S
authors.initials: RS
authors.lastname: Abdul-Malik
authors.forename: Laird M
authors.initials: LM
authors.lastname: Close
authors.forename: Mary A
authors.initials: MA
authors.lastname: Peters
authors.forename: David M
authors.initials: DM
authors.lastname: Palacios
authors.forename: Daniel W
authors.initials: DW
authors.lastname: Wilson