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

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

Optical Sciences

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

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).

Original language	English (US)
Article number	011014
Journal	Journal of Astronomical Telescopes, Instruments, and Systems
Volume	2
Issue number	1
DOIs	https://doi.org/10.1117/1.JATIS.2.1.011014
State	Published - Jan 1 2016

Keywords

coronagraph
exoplanets
wavefront control

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Control and Systems Engineering
Instrumentation
Astronomy and Astrophysics
Mechanical Engineering
Space and Planetary Science

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10.1117/1.JATIS.2.1.011014

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Kern, B., Guyon, O., Belikov, R., Wilson, D., Muller, R., Sidick, E., Balasubramanian, B., Krist, J., Poberezhskiy, I., & Tang, H. (2016). 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]. https://doi.org/10.1117/1.JATIS.2.1.011014

Kern, B, Guyon, O, Belikov, R, Wilson, D, Muller, R, Sidick, E, Balasubramanian, B, Krist, J, Poberezhskiy, I & Tang, H 2016, 'Phase-induced amplitude apodization complex mask coronagraph mask fabrication, characterization, and modeling for WFIRST-AFTA', Journal of Astronomical Telescopes, Instruments, and Systems, vol. 2, no. 1, 011014. https://doi.org/10.1117/1.JATIS.2.1.011014

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AU - Muller, Richard

AU - Sidick, Erkin

AU - Balasubramanian, Bala

AU - Krist, John

AU - Poberezhskiy, Ilya

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

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Keywords

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