Visible nulling interferometer
Visible nulling interferometer
复制标题
可见光归零干涉仪
DOI：
10.1117/12.552527
复制
发表时间：
2004
期刊：
影响因子：
--
通讯作者：
Duncan T. H. Liu
中科院分区：
文献类型：
--
作者：
M. Shao;J. Wallace;B. Levine;Duncan T. H. Liu
在可见光区直接探测类地行星是一个非常具有挑战性的目标。本文介绍了一种利用空间4米望远镜后的调零干涉仪直接探测类地行星的新概念。基本概念描述沿着与调零干涉仪的关键优势，更传统的方法，变迹孔径望远镜或日冕。在基线设计中，4波束零陷器产生非常深的θ ^4零陷。在完美的光学条件下，恒星泄漏小于行星所在位置的星光的1 e-11。利用衍射极限（λ/20）望远镜光学系统，将星光抑制到~ 1 e-10是可能的。
The direct detection of Earthlike planets in the visible is a very challenging goal This paper describes a new concept for visible direct detection of Earths using a nulling interferometer instrument behind a 4m telescope in space. The basic concept is described along with the key advantages of the nulling interferometer over more traditional approaches, an apodized aperture telescope or coronagraph. In the baseline design, a 4 beam nuller produces a very deep theta^4 null. With perfect optics, the stellar leakage is less than 1e-11 of the starlight at the location of the planet. With diffraction limited (lambda/20) telescope optics suppression of the starlight to ~1e-10 would be possible.