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

Brian Kern; Olivier Guyon; Ruslan Belikov; Daniel Wilson; Richard Muller; Erkin Sidick; Bala Balasubramanian; John Krist; Ilya Poberezhskiy; Hong Tang

doi:10.1117/1.JATIS.2.1.011014

28 January 2016 Phase-induced amplitude apodization complex mask coronagraph mask fabrication, characterization, and modeling for WFIRST-AFTA

Brian Kern, Olivier Guyon, Ruslan Belikov, Daniel Wilson, Richard Muller, Erkin Sidick, Bala Balasubramanian, John Krist, Ilya Poberezhskiy, Hong Tang

Author Affiliations +

Journal of Astronomical Telescopes, Instruments, and Systems, Vol. 2, Issue 1, 011014 (January 2016). https://doi.org/10.1117/1.JATIS.2.1.011014

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).

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Brian Kern, Olivier Guyon, Ruslan Belikov, Daniel Wilson, Richard Muller, Erkin Sidick, Bala Balasubramanian, John Krist, Ilya Poberezhskiy, and Hong Tang "Phase-induced amplitude apodization complex mask coronagraph mask fabrication, characterization, and modeling for WFIRST-AFTA," Journal of Astronomical Telescopes, Instruments, and Systems 2(1), 011014 (28 January 2016). https://doi.org/10.1117/1.JATIS.2.1.011014

Published: 28 January 2016

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