Comparison of simulated contrast performance of different Phase Induced Amplitude Apodization (PIAA) coronagraph configurations

Erkin Sidick; Brian Kern; Andreas Kuhnert; Stuart Shaklan

doi:10.1117/12.2035237

26 September 2013 Comparison of simulated contrast performance of different Phase Induced Amplitude Apodization (PIAA) coronagraph configurations

Erkin Sidick, Brian Kern, Andreas Kuhnert, Stuart Shaklan

Author Affiliations +

Proceedings Volume 8864, Techniques and Instrumentation for Detection of Exoplanets VI; 88641Y (2013) https://doi.org/10.1117/12.2035237
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

Abstract

We compare the broadband contrast performances of several Phase Induced Amplitude Apodization (PIAA) coronagraph configurations through modeling and simulations. The basic optical design of the PIAA coronagraph is the same as NASA’s High Contrast Imaging Testbed (HCIT) setup at the Jet Propulsion Laboratory (JPL). Using a deformable mirror and a broadband wavefront sensing and control algorithm, we create a 'dark hole' in the broadband point-spread function (PSF) with an inner working angle (IWA) of 2(fλ/D)_sky. We evaluate two systems in parallel. One is a perfect system having a design PIAA output amplitude and not having any wavefront error at its exit-pupil. The other is a realistic system having a design PIAA output amplitude and the measured residual wavefront error. We also investigate the effect of Lyot stops of various sizes when a postapodizer is and is not present. For the configurations simulated here with the first-generation PIAA mirrors, the best 7.5% broadband contrast value was ~1.5×10^-8.

Citation Download Citation

Erkin Sidick, Brian Kern, Andreas Kuhnert, and Stuart Shaklan "Comparison of simulated contrast performance of different Phase Induced Amplitude Apodization (PIAA) coronagraph configurations", Proc. SPIE 8864, Techniques and Instrumentation for Detection of Exoplanets VI, 88641Y (26 September 2013); https://doi.org/10.1117/12.2035237

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