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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Glenn D. Boreman
  • Vol. 44, Iss. 34 — Dec. 1, 2005
  • pp: 7313–7321

Subwavelength surface-relief gratings for stellar coronagraphy

Dimitri Mawet, Pierre Riaud, Jean Surdej, and Jacques Baudrand  »View Author Affiliations


Applied Optics, Vol. 44, Issue 34, pp. 7313-7321 (2005)
http://dx.doi.org/10.1364/AO.44.007313


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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.

© 2005 Optical Society of America

OCIS Codes
(050.5080) Diffraction and gratings : Phase shift
(220.4830) Optical design and fabrication : Systems design

ToC Category:
Optical Design and Fabrication

History
Original Manuscript: February 28, 2005
Revised Manuscript: June 23, 2005
Manuscript Accepted: June 24, 2005
Published: December 1, 2005

Citation
Dimitri Mawet, Pierre Riaud, Jean Surdej, and Jacques Baudrand, "Subwavelength surface-relief gratings for stellar coronagraphy," Appl. Opt. 44, 7313-7321 (2005)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-44-34-7313

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