PIAA coronagraph designs for segmented apertures, robust to low-order aberrations (Conference Presentation)

Ruslan Belikov; Dan Sirbu; Christopher E. Henze; Christopher C Stark; Robert J. Vanderbei; Eduardo Bendek

doi:10.1117/12.2530481

9 September 2019 PIAA coronagraph designs for segmented apertures, robust to low-order aberrations (Conference Presentation)

Ruslan Belikov, Dan Sirbu, Christopher E. Henze, Christopher C Stark, Robert J. Vanderbei, Eduardo Bendek

Author Affiliations +

Proceedings Volume 11117, Techniques and Instrumentation for Detection of Exoplanets IX; 1111715 (2019) https://doi.org/10.1117/12.2530481
Event: SPIE Optical Engineering + Applications, 2019, San Diego, California, United States

Abstract

The Phase-Induced Amplitude Apodization (PIAA) technique represents a family of high performance coronagraphs with high throughput, aggressive inner working angles (IWAs), and compatible with obstructed apertures. This is particularly important because Large UV / Optical/ Infrared (LUVOIR) and HabEx B concepts currently considered for the 2020 decadal survey are based on obstructed and/or segmented apertures. Higher throughputs and IWAs enable significant science gains, or significant savings in size and cost of a mission without reducing science. Historically, however, PIAA-based designs on segmented apertures (PIAACMC) were also sensitive to low order aberrations such as tip/tilt jitter, as well as large stellar angular sizes. In this paper, we show a classic PIAA design for the segmented aperture of LUVOIR B that features high tolerance to low-order aberrations. It can gain arbitrarily good sensitivity to low order aberrations at the expense of IWA, by varying the size of the focal plane mask. Missions can either commit to a single mask, or have several masks, selecting the one best suited for each target’s stellar size, which can further increase science yield. We find that in order to maintain 1e-10 contrast for stellar diameters of 0.1 l/D, the IWA needs to be enlarged to 3 l/D. Finally, we show that in theory, it is possible for coronagraphs to have much better inner working angles while being tolerant to 0.1 l/D diameter stars, so there is still a lot of opportunity to improve the science yield of a given mission by developing even better coronagraphs.

Conference Presentation

Citation Download Citation

Ruslan Belikov, Dan Sirbu, Christopher E. Henze, Christopher C Stark, Robert J. Vanderbei, and Eduardo Bendek "PIAA coronagraph designs for segmented apertures, robust to low-order aberrations (Conference Presentation)", Proc. SPIE 11117, Techniques and Instrumentation for Detection of Exoplanets IX, 1111715 (9 September 2019); https://doi.org/10.1117/12.2530481

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
PRESENTATION

WATCH
PRESENTATION SAVE TO MY LIBRARY

GET CITATION

KEYWORDS

Coronagraphy

Apodization

Infrared radiation

Stars

Tolerancing

Ultraviolet radiation

UV optics

Show All Keywords

Keywords/Phrases

Search In:

Publication Years