Division of Applied Physics, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido, Japan.
Opt Lett. 2011 Sep 15;36(18):3611-3. doi: 10.1364/OL.36.003611.
A lateral-shearing interferometer with a pair of double Fresnel rhombs is proposed. Use of Fresnel rhombs enables us to accomplish simultaneously lateral shearing and achromatic nulling. Nulling interferometry with lateral shearing is one of the basic methods for searching directly for extrasolar planets with a segmented-mirror telescope. Here the Thirty-Meter Telescope is considered as a model of a segmented-mirror telescope. Our computer simulations show high extinction for the K-band (2.0-2.4 μm). Optical experiments are conducted to verify the lateral shearing and nulling with a pair of double Fresnel rhombs.
提出了一种具有一对双菲涅耳棱的横向剪切干涉仪。使用菲涅耳棱，我们可以同时实现横向剪切和消色差消光。具有横向剪切的消光干涉测量是用分段镜面望远镜直接搜索系外行星的基本方法之一。这里以三十米望远镜为例，作为分段镜面望远镜的模型。我们的计算机模拟显示 K 波段（2.0-2.4μm）的高消光。进行了光学实验以验证一对双菲涅耳棱的横向剪切和消光。
