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Proceedings Paper

Development of binary band-limited coronagraph masks for extremely high contrast imaging of extrasolar planets with Terrestrial Planet Finder
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Paper Abstract

We report progress on development of a new generation of binary band-limited coronagraphic image masks at Penn State for extremely high contrast imaging of extrasolar planets with future visible Terrestrial Planet Finder (TPF). The masks are being precisely fabricated with a state-of-the-art E-beam lithographer using ~20 nm precision and are capable of achieving contrasts of 10-9 with high throughput (> 40%) and close inner working distance (3 λ/D). A prototype with 250 nm precision has allowed us to reach ~10-6 contrast at 8 λ/D and 10-5 at 3 λ/D with ~27% throughput (Debes et al. 2004).

Paper Details

Date Published: 12 October 2004
PDF: 8 pages
Proc. SPIE 5487, Optical, Infrared, and Millimeter Space Telescopes, (12 October 2004); doi: 10.1117/12.552396
Show Author Affiliations
Justin Crepp, The Pennsylvania State Univ. (United States)
Univ. of Florida (United States)
Jian Ge, The Pennsylvania State Univ. (United States)
Univ. of Florida (United States)
John H. Debes, The Pennsylvania State Univ. (United States)
Marc J. Kuchner, Princeton Univ. Observatory (United States)


Published in SPIE Proceedings Vol. 5487:
Optical, Infrared, and Millimeter Space Telescopes
John C. Mather, Editor(s)

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