Design and laboratory demonstration of an achromatic vector vortex coronagraph

Murakami, Naoshi; Hamaguchi, Shoki; Sakamoto, Moritsugu et al.

Optics Express, 2013, 21(6), 7400-7410

Permalink : https://hdl.handle.net/2115/52784

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論文情報

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アクセス権
open access
URI
https://hdl.handle.net/2115/52784
タイトル
Design and laboratory demonstration of an achromatic vector vortex coronagraph
著者
Murakami, Naoshi ; Hamaguchi, Shoki ; Sakamoto, Moritsugu ; Fukumoto, Ryohei ; Ise, Akitoshi ; Oka, Kazuhiko ; Baba, Naoshi ; Tamura, Motohide
e-Rad_Researcher
80450188
著者名
Murakami, Naoshi
著者名
Hamaguchi, Shoki
著者名
Sakamoto, Moritsugu
著者名
Fukumoto, Ryohei
著者名
Ise, Akitoshi
e-Rad_Researcher
00194324
著者名
Oka, Kazuhiko
著者名
Baba, Naoshi
著者名
Tamura, Motohide
言語
英語
発行日
2013-03-25
出版者
Optical Society of America
収録物名
Optics Express
巻(号)
21(6)
ページ
7400-7410
抄録
A vector vortex coronagraph (VVC) is one of promising means for imaging extremely faint objects around bright stars such as exoplanets. We present a design of an achromatic VVC, in which an axially-symmetric half-wave plate (AHP) is placed between crossed polarization filters (circular polarizer and analyzer). The circular polarizer and the analyzer are both composed of a polarizer and a quarter-wave plate (QWP). We demonstrate, via Jones calculus and Fourier analysis, that the achromatic stellar elimination can theoretically be realized by optimal polarization filters, even when chromatic AHP and QWPs are used. We carried out laboratory demonstrations of the designed VVC using a photonic-crystal AHP. As a result, we observed achromatic coronagraphic performance, a light suppression level of 7 x 10(-5), over a wavelength from 543 nm to 633 nm. (c) 2013 Optical Society of America
資源タイプ
学術雑誌論文
出版タイプ
Version of Record
権利情報
© 2013 Optical Society of America, Inc.
PISSN
1094-4087
関連情報
PMID
23546123
関連情報 (isIdenticalTo)
出版社版DOI
https://doi.org/10.1364/OE.21.007400