AI 中文总结
介绍升级后THD2试验台成果，包括高斯形分集探头在罗曼望远镜观测上的优势，以及在欧空局项目中测试新的偏振无关矢量涡旋日冕仪，增强了欧洲高对比度成像能力，为新技术开发提供平台。
AI 中文摘要
我们展示了升级后的THD2高对比度成像试验台的首个科学成果。报告了其改进的稳定性和宽带性能带来的两项进展。一是对于罗曼太空望远镜，高斯形分集探头在减少非线性、支持更高探头幅度和提高电场估计效率方面优于基线 sinc 探头，已被优先作为罗曼的增强早期观测。二是在欧空局的SUPPPPRESS项目中，测试了新的偏振无关矢量涡旋日冕仪，设计使其在20%带宽内高对比度性能接近1e-10。这些结果表明THD2增强了欧洲高对比度成像能力，为下一代日冕仪技术开发提供了独特平台。
英文摘要
We present the first scientific results delivered by the upgraded THD2 high-contrast imaging testbed. We report two advances enabled by its improved stability and broadband performance. First, for the Roman Space Telescope, we demonstrate that Gaussian-shaped diversity probes outperform the baseline sinc probes by reducing non-linearities, supporting higher probe amplitudes, and improving electric field estimation efficiency. These results have led to their prioritization as an enhanced early observation for Roman. Second, within ESA's SUPPPPRESS project, we test new polarization-independent Vector Vortex Coronagraphs and design them to high-contrast performance approaching 1e-10 over a 20% bandwidth. We assess their behavior in narrow- and broadband light with active focal-plane wavefront control. Together, these results show how THD2 strengthens Europe's capability in high-contrast imaging, providing a unique platform reaching contrasts of 1e-8 to 1e-9 for developing next-generation coronagraphic technologies.
Comments13 pages, 4 figures; Proc. SPIE 14145, Space Telescopes and Instrumentation 2026: Optical, Infrared, and Millimeter Wave, 14145-70
