Pupil-Plane Phase Apodization

WORLD SCIENTIFIC eBooks, pp. 377–384

Abstract

Phase apodization coronagraphs are implemented in a pupil plane to create a dark hole in the science camera focal plane. They are successfully created as "Apodizing Phase Plates" (APPs) using classical optical manufacturing, and as "vector-APPs" using liquid-crystal patterning with essentially achromatic performance. This type of coronagraph currently delivers excellent broadband contrast ($\sim$10$^{-5}$) at small angular separations (few $λ/D$) at ground-based telescopes, owing to their insensitivity to tip/tilt errors.

Authors 3

1. Matthew A. Kenworthy

   University of Arizona

   Affiliation as printed

   Steward Observatory, 933 N. Cherry Avenue, Tucson, AZ 85721, USA

2. Johanan L. Codona Aachen Leiden Observatory

   Leiden University · Leiden Observatory

   Affiliation as printed

   Leiden Observatory, Leiden University, P.O. Box 9513, 2300 RA Leiden, The Netherlands

3. Frans Snik Aachen Leiden Observatory

   Leiden University · Leiden Observatory

   Affiliation as printed

   Leiden Observatory, Leiden University, P.O. Box 9513, 2300 RA Leiden, The Netherlands