WFIRST-AFTA coronagraph shaped pupil masks: Design, fabrication, and characterization

Kunjithapatham Balasubramanian; Victor White; Karl Yee; Pierre Echternach; Richard Muller; Matthew Dickie; Eric Cady; Camilo Mejia Prada; Daniel Ryan; Ilya Poberezhskiy; Brian Kern; Hanying Zhou; John Krist; Bijan Nemati; A. J. Eldorado Riggs; Neil T. Zimmerman; N. Jeremy Kasdin

doi:10.1117/1.JATIS.2.1.011005

WFIRST-AFTA coronagraph shaped pupil masks: Design, fabrication, and characterization

Kunjithapatham Balasubramanian, Victor White, Karl Yee, Pierre Echternach, Richard Muller, Matthew Dickie, Eric Cady, Camilo Mejia Prada, Daniel Ryan, Ilya Poberezhskiy, Brian Kern, Hanying Zhou, John Krist, Bijan Nemati, A. J. Eldorado Riggs, Neil T. Zimmerman, N. Jeremy Kasdin

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

37 Scopus citations

Abstract

NASA WFIRST-AFTA mission study includes a coronagraph instrument to find and characterize exoplanets. Various types of masks could be employed to suppress the host starlight to about 10-9 level contrast over a broad spectrum to enable the coronagraph mission objectives. Such masks for high-contrast internal coronagraphic imaging require various fabrication technologies to meet a wide range of specifications, including precise shapes, micron scale island features, ultralow reflectivity regions, uniformity, wave front quality, and achromaticity. We present the approaches employed at JPL to produce pupil plane and image plane coronagraph masks by combining electron beam, deep reactive ion etching, and black silicon technologies with illustrative examples of each, highlighting milestone accomplishments from the High Contrast Imaging Testbed at JPL and from the High Contrast Imaging Lab at Princeton University.

Original language	English (US)
Article number	011005
Journal	Journal of Astronomical Telescopes, Instruments, and Systems
Volume	2
Issue number	1
DOIs	https://doi.org/10.1117/1.JATIS.2.1.011005
State	Published - Jan 1 2016

All Science Journal Classification (ASJC) codes

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

Keywords

WFIRST-AFTA
black silicon
coronagraph
exoplanet
shaped pupil masks

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10.1117/1.JATIS.2.1.011005

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Balasubramanian, K., White, V., Yee, K., Echternach, P., Muller, R., Dickie, M., Cady, E., Prada, C. M., Ryan, D., Poberezhskiy, I., Kern, B., Zhou, H., Krist, J., Nemati, B., Eldorado Riggs, A. J., Zimmerman, N. T., & Kasdin, N. J. (2016). WFIRST-AFTA coronagraph shaped pupil masks: Design, fabrication, and characterization. Journal of Astronomical Telescopes, Instruments, and Systems, 2(1), Article 011005. https://doi.org/10.1117/1.JATIS.2.1.011005

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title = "WFIRST-AFTA coronagraph shaped pupil masks: Design, fabrication, and characterization",

abstract = "NASA WFIRST-AFTA mission study includes a coronagraph instrument to find and characterize exoplanets. Various types of masks could be employed to suppress the host starlight to about 10-9 level contrast over a broad spectrum to enable the coronagraph mission objectives. Such masks for high-contrast internal coronagraphic imaging require various fabrication technologies to meet a wide range of specifications, including precise shapes, micron scale island features, ultralow reflectivity regions, uniformity, wave front quality, and achromaticity. We present the approaches employed at JPL to produce pupil plane and image plane coronagraph masks by combining electron beam, deep reactive ion etching, and black silicon technologies with illustrative examples of each, highlighting milestone accomplishments from the High Contrast Imaging Testbed at JPL and from the High Contrast Imaging Lab at Princeton University.",

keywords = "WFIRST-AFTA, black silicon, coronagraph, exoplanet, shaped pupil masks",

author = "Kunjithapatham Balasubramanian and Victor White and Karl Yee and Pierre Echternach and Richard Muller and Matthew Dickie and Eric Cady and Prada, {Camilo Mejia} and Daniel Ryan and Ilya Poberezhskiy and Brian Kern and Hanying Zhou and John Krist and Bijan Nemati and {Eldorado Riggs}, {A. J.} and Zimmerman, {Neil T.} and Kasdin, {N. Jeremy}",

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Balasubramanian, K, White, V, Yee, K, Echternach, P, Muller, R, Dickie, M, Cady, E, Prada, CM, Ryan, D, Poberezhskiy, I, Kern, B, Zhou, H, Krist, J, Nemati, B, Eldorado Riggs, AJ, Zimmerman, NT & Kasdin, NJ 2016, 'WFIRST-AFTA coronagraph shaped pupil masks: Design, fabrication, and characterization', Journal of Astronomical Telescopes, Instruments, and Systems, vol. 2, no. 1, 011005. https://doi.org/10.1117/1.JATIS.2.1.011005

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AU - Balasubramanian, Kunjithapatham

AU - White, Victor

AU - Yee, Karl

AU - Echternach, Pierre

AU - Muller, Richard

AU - Dickie, Matthew

AU - Cady, Eric

AU - Prada, Camilo Mejia

AU - Ryan, Daniel

AU - Poberezhskiy, Ilya

AU - Kern, Brian

AU - Zhou, Hanying

AU - Krist, John

AU - Nemati, Bijan

AU - Eldorado Riggs, A. J.

AU - Zimmerman, Neil T.

AU - Kasdin, N. Jeremy

PY - 2016/1/1

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N2 - NASA WFIRST-AFTA mission study includes a coronagraph instrument to find and characterize exoplanets. Various types of masks could be employed to suppress the host starlight to about 10-9 level contrast over a broad spectrum to enable the coronagraph mission objectives. Such masks for high-contrast internal coronagraphic imaging require various fabrication technologies to meet a wide range of specifications, including precise shapes, micron scale island features, ultralow reflectivity regions, uniformity, wave front quality, and achromaticity. We present the approaches employed at JPL to produce pupil plane and image plane coronagraph masks by combining electron beam, deep reactive ion etching, and black silicon technologies with illustrative examples of each, highlighting milestone accomplishments from the High Contrast Imaging Testbed at JPL and from the High Contrast Imaging Lab at Princeton University.

AB - NASA WFIRST-AFTA mission study includes a coronagraph instrument to find and characterize exoplanets. Various types of masks could be employed to suppress the host starlight to about 10-9 level contrast over a broad spectrum to enable the coronagraph mission objectives. Such masks for high-contrast internal coronagraphic imaging require various fabrication technologies to meet a wide range of specifications, including precise shapes, micron scale island features, ultralow reflectivity regions, uniformity, wave front quality, and achromaticity. We present the approaches employed at JPL to produce pupil plane and image plane coronagraph masks by combining electron beam, deep reactive ion etching, and black silicon technologies with illustrative examples of each, highlighting milestone accomplishments from the High Contrast Imaging Testbed at JPL and from the High Contrast Imaging Lab at Princeton University.

KW - WFIRST-AFTA

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WFIRST-AFTA coronagraph shaped pupil masks: Design, fabrication, and characterization

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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