The Four Quadrant Phase Mask Coronagraph and its avatars
The Four Quadrant Phase Mask Coronagraph and its avatars
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四象限相位掩模日冕仪及其化身
DOI：
10.1016/j.crhy.2007.05.004
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
P. Riaud
中科院分区：
文献类型：
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作者：
D. Rouan;J. Baudrand;A. Boccaletti;P. Baudoz;D. Mawet;P. Riaud
大约十年前，随着直接探测太阳系外行星这一新的、非常苛刻的目标的出现，人们开始重新燃起对利奥日冕学的兴趣。在新想法中，四象限相位掩模（4QPMC）相当多。 4QPM 日冕仪基于二元相位掩模 (0,π) 的独特设计，将焦平面处的整个视场划分为四个象限。正如分析所证明的那样，完全集中在掩模上的光源的相干光的相互相消干涉会在光瞳图像内产生完全零化。我们首先回顾一下4QPMC的概念和性能。然后，我们通过模拟分析空间或地面观测的不同限制。然后我们解决了设备制造的问题，并给出了实验室中实际性能的状况。一节回顾了正在开发的配备该组件的各种仪器。最后，我们对 4QPMC 系列的其余部分进行了总结，其中包括不同团队提出的几种变体。更具体地说，我们通过描述当前为解决这个问题而探索的各种想法来解决消色差的重要问题。其中，展示了一些尚未出版的正版。引用本文：D. Rouan 等人，C. R. Physique 8 (2007)。
A renewal of interest into Lyot coronagraphy began about 10 years ago with the advent of the new and very demanding goal of detecting directly extrasolar planets. Among the new ideas, the Four Quadrant Phase Mask (4QPMC) has been rather prolific. The 4QPM coronagraph is based the peculiar design of binary phase mask (0,π) dividing the full field of view at the focal plane in four quadrants. The mutual destructive interferences of the coherent light of a source perfectly centered on the mask, produce a total nulling within the pupil image, as is demonstrated analytically. We first recall the concept and performance of the 4QPMC. We then analyse the different limitations in space or ground-based observations from simulations. We then address the issue of device manufacturing and give the status of the actual performance in laboratory. A section reviews the various instruments under development that are equipped with this component. We conclude with a panorama of the rest of the family of the 4QPMC, which comprises several variants proposed by different teams. More specifically we address the important question of the achromatization by describing the various ideas which are currently explored to solve this problem. Among them, some genuine ones, not yet published, are presented. To cite this article: D. Rouan et al., C. R. Physique 8 (2007).