Fabrication and testing of phase masks for optical vortex coronagraph to observe extrasolar planets
Fabrication and testing of phase masks for optical vortex coronagraph to observe extrasolar planets
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DOI：
10.1117/12.855780
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发表时间：
2010-07
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影响因子：
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通讯作者：
E. Mari;Fabrizio Tamburini;Cesare Barbieri;Antonio Bianchini;Mauro Prasciolu;M. Massari;Filippo Romanato
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文献类型：
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作者：
E. Mari;Fabrizio Tamburini;Cesare Barbieri;Antonio Bianchini;Mauro Prasciolu;M. Massari;Filippo Romanato
光学涡旋日冕仪（OVC）是一种创新仪器，可应用于太空和地面望远镜，对明亮恒星周围的行星进行直接成像。 OVC 拒绝轴上恒星的光，而不改变离轴光源的光，即使用螺旋相位板 (SPP) 用作相位调制装置 (PMD)。我们介绍了光刻纳米加工的制造工艺以及两种不同高质量 SPP 表征的测试。
The optical vortex coronagraph (OVC) is an innovative instrument that can be applied to both space and groundbased telescopes for direct imaging of planets around bright stars. OVC rejects the light of the on-axis star without altering that of off-axis sources, means of a spiral phase plate (SPP) used as a phase modyfing device (PMD). We present the fabrication process made by lithographic nanofabrication and tests for the characterization of two different high-quality SPPs.