Assessing the performance limits of internal coronagraphs through end-to-end modeling

John E. Krist; Ruslan Belikov; Laurent Pueyo; Dimitri P. Mawet; Dwight Moody; John T. Trauger; Stuart B. Shaklan

doi:10.1117/12.2024954

26 September 2013 Assessing the performance limits of internal coronagraphs through end-to-end modeling

John E. Krist, Ruslan Belikov, Laurent Pueyo, Dimitri P. Mawet, Dwight Moody, John T. Trauger, Stuart B. Shaklan

Proceedings Volume 8864, Techniques and Instrumentation for Detection of Exoplanets VI; 88640P (2013) https://doi.org/10.1117/12.2024954
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

Abstract

As part of the NASA ROSES Technology Demonstrations for Exoplanet Missions (TDEM) program, we conducted a numerical modeling study of three internal coronagraphs (PIAA, vector vortex, hybrid bandlimited) to understand their behaviors in realistically-aberrated systems with wavefront control (deformable mirrors). This investigation consisted of two milestones: (1) develop wavefront propagation codes appropriate for each coronagraph that are accurate to 1% or better (compared to a reference algorithm) but are also time and memory efficient, and (2) use these codes to determine the wavefront control limits of each architecture. We discuss here how the milestones were met and identify some of the behaviors particular to each coronagraph. The codes developed in this study are being made available for community use. We discuss here results for the HBLC and VVC systems, with PIAA having been discussed in a previous proceeding.

Citation Download Citation

John E. Krist, Ruslan Belikov, Laurent Pueyo, Dimitri P. Mawet, Dwight Moody, John T. Trauger, and Stuart B. Shaklan "Assessing the performance limits of internal coronagraphs through end-to-end modeling", Proc. SPIE 8864, Techniques and Instrumentation for Detection of Exoplanets VI, 88640P (26 September 2013); https://doi.org/10.1117/12.2024954

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