Exoplanet coronagraph shaped pupil masks and laboratory scale star shade 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; Hanying Zhou; Brian Kern; A. J. Riggs; Neil T. Zimmerman; Dan Sirbu; Stuart Shaklan; Jeremy Kasdin

doi:10.1117/12.2188954

Exoplanet coronagraph shaped pupil masks and laboratory scale star shade 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, Hanying Zhou, Brian Kern, A. J. Riggs, Neil T. Zimmerman, Dan Sirbu, Stuart Shaklan, Jeremy Kasdin

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

4 Scopus citations

Abstract

Star light suppression technologies to find and characterize faint exoplanets include internal coronagraph instruments as well as external star shade occulters. Currently, the NASA WFIRST-AFTA mission study includes an internal coronagraph instrument to find and characterize exoplanets. Various types of masks could be employed to suppress the host star light 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, ultra-low reflectivity regions, uniformity, wave front quality, achromaticity, etc. 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 (HCIT) at JPL and from the High Contrast Imaging Lab (HCIL) at Princeton University. We also present briefly the technologies applied to fabricate laboratory scale star shade masks.

Original language	English (US)
Title of host publication	Techniques and Instrumentation for Detection of Exoplanets VII
Editors	Stuart Shaklan
Publisher	SPIE
ISBN (Electronic)	9781628417715
DOIs	https://doi.org/10.1117/12.2188954
State	Published - 2015
Event	Techniques and Instrumentation for Detection of Exoplanets VII - San Diego, United States Duration: Aug 10 2015 → Aug 13 2015

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	9605
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Other

Other	Techniques and Instrumentation for Detection of Exoplanets VII
Country/Territory	United States
City	San Diego
Period	8/10/15 → 8/13/15

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Keywords

Coronagraph
Exoplanet
Shaped Pupil Masks
WFIRST-AFTA
external occulter
star shade

Access to Document

10.1117/12.2188954

Cite this

Balasubramanian, K., White, V., Yee, K., Echternach, P., Muller, R., Dickie, M., Cady, E., Mejia Prada, C., Ryan, D., Poberezhskiy, I., Zhou, H., Kern, B., Riggs, A. J., Zimmerman, N. T., Sirbu, D., Shaklan, S., & Kasdin, J. (2015). Exoplanet coronagraph shaped pupil masks and laboratory scale star shade masks: Design, fabrication and characterization. In S. Shaklan (Ed.), Techniques and Instrumentation for Detection of Exoplanets VII Article 96050L (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9605). SPIE. https://doi.org/10.1117/12.2188954

@inproceedings{f784fd81a5c34ba1a7bfd18799dc9b12,

title = "Exoplanet coronagraph shaped pupil masks and laboratory scale star shade masks: Design, fabrication and characterization",

abstract = "Star light suppression technologies to find and characterize faint exoplanets include internal coronagraph instruments as well as external star shade occulters. Currently, the NASA WFIRST-AFTA mission study includes an internal coronagraph instrument to find and characterize exoplanets. Various types of masks could be employed to suppress the host star light 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, ultra-low reflectivity regions, uniformity, wave front quality, achromaticity, etc. 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 (HCIT) at JPL and from the High Contrast Imaging Lab (HCIL) at Princeton University. We also present briefly the technologies applied to fabricate laboratory scale star shade masks.",

keywords = "Coronagraph, Exoplanet, Shaped Pupil Masks, WFIRST-AFTA, external occulter, star shade",

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

note = "Publisher Copyright: {\textcopyright} 2015 SPIE.; Techniques and Instrumentation for Detection of Exoplanets VII ; Conference date: 10-08-2015 Through 13-08-2015",

year = "2015",

doi = "10.1117/12.2188954",

language = "English (US)",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

publisher = "SPIE",

editor = "Stuart Shaklan",

booktitle = "Techniques and Instrumentation for Detection of Exoplanets VII",

address = "United States",

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Balasubramanian, K, White, V, Yee, K, Echternach, P, Muller, R, Dickie, M, Cady, E, Mejia Prada, C, Ryan, D, Poberezhskiy, I, Zhou, H, Kern, B, Riggs, AJ, Zimmerman, NT, Sirbu, D, Shaklan, S & Kasdin, J 2015, Exoplanet coronagraph shaped pupil masks and laboratory scale star shade masks: Design, fabrication and characterization. in S Shaklan (ed.), Techniques and Instrumentation for Detection of Exoplanets VII., 96050L, Proceedings of SPIE - The International Society for Optical Engineering, vol. 9605, SPIE, Techniques and Instrumentation for Detection of Exoplanets VII, San Diego, United States, 8/10/15. https://doi.org/10.1117/12.2188954

Exoplanet coronagraph shaped pupil masks and laboratory scale star shade masks: Design, fabrication and characterization. / Balasubramanian, Kunjithapatham; White, Victor; Yee, Karl et al.
Techniques and Instrumentation for Detection of Exoplanets VII. ed. / Stuart Shaklan. SPIE, 2015. 96050L (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9605).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Exoplanet coronagraph shaped pupil masks and laboratory scale star shade masks

T2 - Techniques and Instrumentation for Detection of Exoplanets VII

AU - Balasubramanian, Kunjithapatham

AU - White, Victor

AU - Yee, Karl

AU - Echternach, Pierre

AU - Muller, Richard

AU - Dickie, Matthew

AU - Cady, Eric

AU - Mejia Prada, Camilo

AU - Ryan, Daniel

AU - Poberezhskiy, Ilya

AU - Zhou, Hanying

AU - Kern, Brian

AU - Riggs, A. J.

AU - Zimmerman, Neil T.

AU - Sirbu, Dan

AU - Shaklan, Stuart

AU - Kasdin, Jeremy

PY - 2015

Y1 - 2015

N2 - Star light suppression technologies to find and characterize faint exoplanets include internal coronagraph instruments as well as external star shade occulters. Currently, the NASA WFIRST-AFTA mission study includes an internal coronagraph instrument to find and characterize exoplanets. Various types of masks could be employed to suppress the host star light 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, ultra-low reflectivity regions, uniformity, wave front quality, achromaticity, etc. 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 (HCIT) at JPL and from the High Contrast Imaging Lab (HCIL) at Princeton University. We also present briefly the technologies applied to fabricate laboratory scale star shade masks.

AB - Star light suppression technologies to find and characterize faint exoplanets include internal coronagraph instruments as well as external star shade occulters. Currently, the NASA WFIRST-AFTA mission study includes an internal coronagraph instrument to find and characterize exoplanets. Various types of masks could be employed to suppress the host star light 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, ultra-low reflectivity regions, uniformity, wave front quality, achromaticity, etc. 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 (HCIT) at JPL and from the High Contrast Imaging Lab (HCIL) at Princeton University. We also present briefly the technologies applied to fabricate laboratory scale star shade masks.

KW - Coronagraph

KW - Exoplanet

KW - Shaped Pupil Masks

KW - WFIRST-AFTA

KW - external occulter

KW - star shade

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DO - 10.1117/12.2188954

M3 - Conference contribution

AN - SCOPUS:84960916982

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Techniques and Instrumentation for Detection of Exoplanets VII

A2 - Shaklan, Stuart

PB - SPIE

Y2 - 10 August 2015 through 13 August 2015

ER -

Balasubramanian K, White V, Yee K, Echternach P, Muller R, Dickie M et al. Exoplanet coronagraph shaped pupil masks and laboratory scale star shade masks: Design, fabrication and characterization. In Shaklan S, editor, Techniques and Instrumentation for Detection of Exoplanets VII. SPIE. 2015. 96050L. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2188954

Exoplanet coronagraph shaped pupil masks and laboratory scale star shade masks: Design, fabrication and characterization

Abstract

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All Science Journal Classification (ASJC) codes

Keywords

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