Subwavelength surface-relief gratings for stellar coronagraphy
Abstract
We present a new design of a phase mask coronagraph implemented with subwavelength diffractive optical elements consisting of optimized surface-relief gratings. Phase mask coronagraphy is a recent technique that seeks to accommodate both high dynamic and high angular resolution imaging of faint sources around bright astrophysical objects such as exoplanets orbiting their host stars. The original design we propose is a new, integrated, and flexible solution to the π phase-shift chromaticity of the phase mask coronagraphs. It will allow broadband observations, i.e., shorter integration times and object characterizations, by means of spectroscopic analysis. The feasibility of the component manufacturing is also considered through a tolerance study.
Additional Information
© 2005 Optical Society of America. Received 28 February 2005; revised manuscript received 23 June 2005; accepted 24 June 2005. D. Mawet acknowledges the financial support of the Belgian "Fonds pour la formation à la Recherche dans l'Industrie et dans l'Agriculture." P. Riaud and J. Surdej acknowledge the financial support of the "Pôle d'Attraction Inter-Universitaire."Attached Files
Published - ao-44-34-7313.pdf
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Additional details
- Eprint ID
- 57719
- Resolver ID
- CaltechAUTHORS:20150520-140705208
- Fonds pour la Formation à la Recherche dans l'índustrie et dans l'Ágriculture (FRIA-Belgium)
- Pôle d'Attraction Inter-Universitaire
- Created
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2015-05-20Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field