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|Abstract:||An external occulter precisely flown in formation with a space telescope has been recently studied as a mission scenario for direct imaging of exoplanets. 10-10 contrast must be attained to permit imaging of the faint reflected light of an Earth-like exoplanet. Here we report on experimental verification of a scaled occulter design that maintains a constant Fresnel number to an equivalent 400 mas space mission in monochromatic light at 632 nm using a diverging beam and an outer mask to suspend the occulter mask. We report contrast in regions of the discovery zone at 4.71 × 10-10 and suppression in the pupil plane of 3.7 × 10-7. © 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).|
|Citation:||Sirbu, D, Cady, EJ, Kasdin, NJ, Vanderbei, RJ, Lu, J, Kao, E. "Optical verification of occulter-based high contrast imaging" Proceedings of SPIE 8151, Techniques and Instrumentation for Detection of Exoplanets V, August 21, 2011, San Diego, California, 2011. doi:10.1117/12.894213|
|Type of Material:||Conference Article|
|Series/Report no.:||Proceedings of SPIE;815114|
|Journal/Proceeding Title:||Techniques and Instrumentation for Detection of Exoplanets V, August 21, 2011, San Diego, California|
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