Polarization interferometric nulling coronagraph for high-contrast imaging

被引：13

作者：

Murakami, Naoshi ^{[1
]}

Yokochi, Kaito ^{[2
,3
]}

Nishikawa, Jun ^{[3
]}

Tamura, Motohide ^{[3
]}

Kurokawa, Takashi ^{[2
]}

Takeda, Mitsuo ^{[4
]}

Baba, Naoshi ^{[1
]}

机构：

[1] Hokkaido Univ, Grad Sch Engn, Kita Ku, Sapporo, Hokkaido 0608588, Japan

[2] Tokyo Univ Agr & Technol, Grad Sch Engn, Koganei, Tokyo 1848588, Japan

[3] Natl Inst Nat Sci, Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan

[4] Univ Electrocommun, Dept Informat & Commun Engn, Tokyo 1828585, Japan

来源：

APPLIED OPTICS | 2010年 / 49卷 / 16期

基金：

日本学术振兴会;

关键词：

PHASE-MASK CORONAGRAPH; GEOMETRIC PHASE; PLANETS; TELESCOPE; LIGHT; APERTURE; IMAGES; PUPIL;

D O I：

10.1364/AO.49.00D106

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose a novel, high-contrast imager called a polarization interferometric nulling coronagraph (PINC) for direct detection of extrasolar planets. The PINC uses achromatic half-wave plates (HWPs) installed in a fully symmetric beam combiner based on polarizing beam splitters. Jones calculus suggests that a stellar halo suppression level of 10(-10) can be achieved at 5 lambda/D for a broad wavelength range from 1.6 to 2.2 mu m by using Fresnel-rhomb HWPs made of BK7. Laboratory experiments on the PINC used two laser light sources (wavelengths of lambda = 532 and 671 nm), and we obtained a halo suppression level of approximately 10(-6) at 5 lambda/D for both wavelengths. (C) 2010 Optical Society of America

引用

页码：D106 / D114

页数：9

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