Reference : Subwavelength surface-relief gratings for stellar coronagraphy
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/65801
Subwavelength surface-relief gratings for stellar coronagraphy
English
Mawet, Dimitri [> > > >]
Riaud, Pierre [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
Surdej, Jean mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
Baudrand, Jacques [> > > >]
1-Dec-2005
Applied Optics
Optical Society of America
44 Issue 34
7313-7321
Yes (verified by ORBi)
International
0003-6935
1539-4522
Washington
DC
[en] Phase shift ; Optical systems design
[en] 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 pi 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.
Researchers ; Professionals
http://hdl.handle.net/2268/65801
10.1364/AO.44.007313
http://adsabs.harvard.edu/abs/2005ApOpt..44.7313M

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