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Laboratory testing of a Phased Induced Amplitude Apodization (PIAA) coronagraph

Show simple item record Kern, Brian Guyon, Olivier Give'on, Amir Kuhnert, Andreas Niessner, Albert 2013-09-09T18:16:02Z 2013-09-09T18:16:02Z 2011-08-23
dc.identifier.citation SPIE Optics + Photonics 2011, San Diego, California, August 20-25, 2011. en_US
dc.identifier.clearanceno 11-3922
dc.description.abstract We present high-contrast images from laboratory testing of a Phase Induced Amplitude Apodization (PIAA) coronagraph at NASA’s High Contrast Imaging Testbed (HCIT). Using a deformable mirror and wavefront estimation and control algorithms, we create a “dark hole” in the monochromatic point-spread function with an inner working angle of 2.05 fλ/D, with a mean intensity 3.5×10ˉ⁸. We discuss the contributions to this floor, and the techniques being developed to improve it. We also present simulations that investigate the effect of Lyot stops of various sizes, and conclude that a Lyot stop is necessary for 10ˉ⁹ performance but that an annular postapodizer is not necessary. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2011. en_US
dc.subject exoplanets en_US
dc.subject coronagraphy en_US
dc.subject deformable mirror en_US
dc.subject wavefront control en_US
dc.subject wavefront estimation en_US
dc.title Laboratory testing of a Phased Induced Amplitude Apodization (PIAA) coronagraph en_US
dc.type Preprint en_US

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