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Proceedings Paper

Laboratory demonstration of Phase Induced Amplitude Apodization (PIAA) coronagraph with better than 10-9 contrast
Author(s): Brian Kern; Olivier Guyon; Andreas Kuhnert; Albert Niessner; Frantz Martinache; Kunjithapatham Balasubramanian
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Paper 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.

Paper Details

Date Published: 26 September 2013
PDF: 8 pages
Proc. SPIE 8864, Techniques and Instrumentation for Detection of Exoplanets VI, 88640R (26 September 2013); doi: 10.1117/12.2022929
Show Author Affiliations
Brian Kern, Jet Propulsion Lab. (United States)
Olivier Guyon, Steward Observatory, The Univ. of Arizona (United States)
Andreas Kuhnert, Jet Propulsion Lab. (United States)
Albert Niessner, Jet Propulsion Lab. (United States)
Frantz Martinache, Steward Observatory, The Univ. of Arizona (United States)
Kunjithapatham Balasubramanian, Jet Propulsion Lab. (United States)


Published in SPIE Proceedings Vol. 8864:
Techniques and Instrumentation for Detection of Exoplanets VI
Stuart Shaklan, Editor(s)

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