@inproceedings{6641a3f0271c4b22b3d90d3527005a2e,
title = "Toward 10 10 contrast for terrestrial exoplanet detection: Demonstration of wavefront correction in a shaped-pupil coronagraph",
abstract = "The Shaped Pupil Coronagraph (SPC) is a high-contrast imaging system pioneered at Princeton for detection of extrasolar earthlike planets. It is designed to achieve 10 -10 contrast at an inner working angle of 4λ/D. However, a critical requirement in attaining this contrast level in practice is the ability to control wavefront phase and amplitude aberrations to at least λ/10 4 in rms phase and 1/1000 rms amplitude, respectively. Furthermore, this has to be maintained over a large spectral band. The High Contrast Imaging Testbed (HCIT) at the Jet Propulsion Lab (JPL) is a state-of-the-art facility for studying high contrast imaging systems and fine wavefront control methods. It consists of a vacuum chamber containing a configurable coronagraph setup with a Xinetics deformable mirror. In this paper, we present the results of testing Princeton's SPC in JPL's HCIT. In particular, we present the achievement of 4×10 -8 contrast using a speckle nulling algorithm, and demonstrate that this contrast is maintained across wavelengths of 785, 836nm, and for broadband light having 10% bandwidth around 800nm.",
keywords = "Coronagraph, Extrasolar planets, High contrast, Shaped pupils, Speckle nulling, Wavefront correction",
author = "Ruslan Belikov and Amir Give'on and Trauger, {John T.} and Michael Carr and Kasdin, {N. Jeremy} and Vanderbei, {Robert J.} and Fang Shi and Kunjithapatham Balasubramanian and Andreas Kuhnert",
year = "2006",
doi = "10.1117/12.672511",
language = "English (US)",
isbn = "0819463302",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Space Telescopes and Instrumentation I",
note = "Space Telescopes and Instrumentation I: Optical, Infrared, and Millimeter ; Conference date: 24-05-2006 Through 31-05-2006",
}