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Journal of Astronomical Telescopes, Instruments, and Systems

Phase-induced amplitude apodization complex mask coronagraph mask fabrication, characterization, and modeling for WFIRST-AFTA
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Paper Abstract

This work describes the fabrication, characterization, and modeling of a second-generation occulting mask for a phase-induced amplitude apodization complex mask coronagraph, designed for use on the WFIRST-AFTA mission. The mask has many small features (∼micron lateral scales) and was fabricated at the Jet Propulsion Laboratory Microdevices Laboratory, then characterized using a scanning electron microscope, atomic force microscope, and optical interferometric microscope. The measured fabrication errors were then fed to a wavefront control model which predicts the contrast performance of a full coronagraph. The expected coronagraphic performance using this mask is consistent with observing ∼15 planetary targets with WFIRST-AFTA in a reasonable time (<1  day/target).

Paper Details

Date Published: 28 January 2016
PDF: 8 pages
J. Astron. Telesc. Instrum. Syst. 2(1) 011014 doi: 10.1117/1.JATIS.2.1.011014
Published in: Journal of Astronomical Telescopes, Instruments, and Systems Volume 2, Issue 1
Show Author Affiliations
Brian Kern, Jet Propulsion Lab. (United States)
Olivier Guyon, The Univ. of Arizona (United States)
Subaru Telescope, National Astronomical Observatory of Japan (United States)
Ruslan Belikov, NASA Ames Research Ctr. (United States)
Daniel Wilson, Jet Propulsion Lab. (United States)
Richard Muller, Jet Propulsion Lab. (United States)
Erkin Sidick, Jet Propulsion Lab. (United States)
Bala Balasubramanian, Jet Propulsion Lab. (United States)
John Krist, Jet Propulsion Lab. (United States)
Ilya Poberezhskiy, Jet Propulsion Lab. (United States)
Hong Tang, Jet Propulsion Lab. (United States)

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