@inproceedings{a1dffb7a813f41c68d23816dbe31c5c6,
title = "Laboratory demonstration of Phase Induced Amplitude Apodization (PIAA) coronagraph with better than 10-9 contrast",
abstract = "We present coronagraphic images from the Phase Induced Amplitude Apodization (PIAA) coronagraph on NASA's High Contrast Imaging Testbed (HCIT) at the Jet Propulsion Lab, showing contrasts of 5×10-10 averaged from 2-4 λ/D, in monochromatic light at 808 nm. In parallel with the coronagraph and its deformable mirror and coronagraphic wavefront control, we also demonstrate a low-order wavefront control system, giving 100× rms suppression of introduced tip/tilt disturbances down to residual levels of 10-3 λ/D. Current limitations, as well as broadband (10% fractional bandpass) preliminary results are discussed.",
keywords = "Coronagraph, Wavefront control",
author = "Brian Kern and Olivier Guyon and Andreas Kuhnert and Albert Niessner and Frantz Martinache and Kunjithapatham Balasubramanian",
year = "2013",
month = dec,
day = "9",
doi = "10.1117/12.2022929",
language = "English (US)",
isbn = "9780819497147",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Techniques and Instrumentation for Detection of Exoplanets VI",
note = "Techniques and Instrumentation for Detection of Exoplanets VI ; Conference date: 26-08-2013 Through 29-08-2013",
}