论文标题
高对比度光谱试验台上新型标量涡流冠状设计的高对比度演示
High Contrast Demonstrations of Novel Scalar Vortex Coronagraph Designs at the High Contrast Spectroscopy Testbed
论文作者
论文摘要
为了直接成像系外行星，标量涡流冠（SVC）是普遍使用的矢量涡流冠状动脉（VVC）的有吸引力的替代品。这主要是因为他们能够诱导相同的相位坡道，而不管传入的光的极化状态如何。我们在高对比度光谱测试台（HCST）上测试了加州技术系系外行星技术实验室（ET LAB）中的一组梯级SVC楼梯口罩。在这里，我们提出了他们的星光抑制能力的一些初步发现，在7至9 lambda/d的1e-5上实现了原始对比。我们还表征了它们的色彩性能并进行了波前控制，以与EFC在1E-7上实现初步对比度。 SVCS的这些最初的实验结果表明，标量涡流技术具有将来直接直接成像任务的巨大潜力。
For direct imaging of exoplanets, Scalar Vortex Coronagraphs (SVCs) are an attractive alternative to the popularly used Vector Vortex Coronagraphs (VVCs). This is primarily because they are able to induce the same phase ramp regardless of the incoming light's polarization state. We tested a set of stepped SVC staircase masks in the Exoplanet Technology Laboratory (ET Lab) at Caltech on the High-Contrast Spectroscopy Testbed (HCST). Here we present some preliminary findings of their starlight suppression ability, achieving raw contrasts on the order of 1e-5 for 7 to 9 lambda/D. We also characterized their chromatic performance and performed wavefront control to achieve preliminary contrasts on the order of 1e-7 with EFC. These initial experimental results with SVCs have shown scalar vortex technology has a great potential for future exoplanet direct imaging missions.
