Wavefront control performance modeling with WFIRST shaped pupil coronagraph testbed

Hanying Zhou; Bijian Nemati; John Krist; Eric Cady; Brian Kern; Ilya Poberezhskiy

doi:10.1117/12.2274391

1 September 2017 Wavefront control performance modeling with WFIRST shaped pupil coronagraph testbed

Hanying Zhou, Bijian Nemati, John Krist, Eric Cady, Brian Kern, Ilya Poberezhskiy

Proceedings Volume 10400, Techniques and Instrumentation for Detection of Exoplanets VIII; 1040005 (2017) https://doi.org/10.1117/12.2274391
Event: SPIE Optical Engineering + Applications, 2017, San Diego, California, United States

Abstract

NASA’s WFIRST mission includes a coronagraph instrument (CGI) for direct imaging of exoplanets. Significant improvement in CGI model fidelity has been made recently, alongside a testbed high contrast demonstration in a simulated dynamic environment at JPL. We present our modeling method and results of comparisons to testbed’s high order wavefront correction performance for the shaped pupil coronagraph. Agreement between model prediction and testbed result at better than a factor of 2 has been consistently achieved in raw contrast (contrast floor, chromaticity, and convergence), and with that comes good agreement in contrast sensitivity to wavefront perturbations and mask lateral shear.

Conference Presentation

Citation Download Citation

Hanying Zhou, Bijian Nemati, John Krist, Eric Cady, Brian Kern, and Ilya Poberezhskiy "Wavefront control performance modeling with WFIRST shaped pupil coronagraph testbed", Proc. SPIE 10400, Techniques and Instrumentation for Detection of Exoplanets VIII, 1040005 (1 September 2017); https://doi.org/10.1117/12.2274391

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