Shaped pupil coronagraphy for WFIRST: high-contrast broadband testbed demonstration

Eric Cady; Kunjithapatham Balasubramanian; Jessica Gersh-Range; Jeremy Kasdin; Brian Kern; Raymond Lam; Camilo Mejia Prada; Dwight Moody; Keith Patterson; Ilya Poberezhskiy; A. J. Eldorado Riggs; Byoung-Joon Seo; Fang Shi; Hong Tang; John Trauger; Hanying Zhou; Neil Zimmerman

doi:10.1117/12.2272834

1 September 2017 Shaped pupil coronagraphy for WFIRST: high-contrast broadband testbed demonstration

Eric Cady, Kunjithapatham Balasubramanian, Jessica Gersh-Range, Jeremy Kasdin, Brian Kern, Raymond Lam, Camilo Mejia Prada, Dwight Moody, Keith Patterson, Ilya Poberezhskiy, A. J. Eldorado Riggs, Byoung-Joon Seo, Fang Shi, Hong Tang, John Trauger, Hanying Zhou, Neil Zimmerman

Author Affiliations +

Proceedings Volume 10400, Techniques and Instrumentation for Detection of Exoplanets VIII; 104000E (2017) https://doi.org/10.1117/12.2272834
Event: SPIE Optical Engineering + Applications, 2017, San Diego, California, United States

Abstract

The Shaped Pupil Coronagraph (SPC) is one of the two operating modes of the WFIRST coronagraph instrument. The SPC provides starlight suppression in a pair of wedge-shaped regions over an 18% bandpass, and is well suited for spectroscopy of known exoplanets. To demonstrate this starlight suppression in the presence of expected onorbit input wavefront disturbances, we have recently built a dynamic testbed at JPL analogous to the WFIRST flight instrument architecture, with both Hybrid Lyot Coronagraph (HLC) and SPC architectures and a Low Order Wavefront Sensing and Control (LOWFS/C) subsystem to apply, sense, and correct dynamic wavefront disturbances. We present our best up-to-date results of the SPC mode demonstration from the testbed, in both static and dynamic conditions, along with model comparisons. HLC results will be reported separately.

Citation Download Citation

Eric Cady, Kunjithapatham Balasubramanian, Jessica Gersh-Range, Jeremy Kasdin, Brian Kern, Raymond Lam, Camilo Mejia Prada, Dwight Moody, Keith Patterson, Ilya Poberezhskiy, A. J. Eldorado Riggs, Byoung-Joon Seo, Fang Shi, Hong Tang, John Trauger, Hanying Zhou, and Neil Zimmerman "Shaped pupil coronagraphy for WFIRST: high-contrast broadband testbed demonstration", Proc. SPIE 10400, Techniques and Instrumentation for Detection of Exoplanets VIII, 104000E (1 September 2017); https://doi.org/10.1117/12.2272834

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available