FIRST-PL:为昴星团望远镜/SCExAO上的亚衍射极限天文学调试首台可见光子 lantern 光谱仪
FIRST-PL: Commissioning the first visible photonic lantern spectrograph for sub-diffraction-limit astronomy on Subaru/SCExAO
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中文总结 AI 辅助
该研究调试了昴星团望远镜/SCExAO上首台可见光子 Lantern 光谱仪FIRST-PL,采用光子 Lantern 实现多模转单模输出,具高注入效率与通量提升,支持三种观测模式,推动了亚衍射极限天文学的光子仪器发展。
中文摘要 AI 辅助
FIRST-PL(单望远镜光纤成像仪-光子 Lantern)是昴星团望远镜/SCExAO上新调试的可见光仪器,可实现亚衍射极限光谱观测。该仪器采用光子 Lantern(PL)将多模光纤转换为19个单模输出,供给中分辨率光谱仪(R=3000,630-790 nm)。在轨性能显示,其在680 nm处注入效率达40%(斯特列尔比30%),比单模光纤通量提升12倍。三种工作模式可实现光谱天体测量(在β-CMi上验证了50微角秒的精度)、图像重建和高对比度成像,FIRST-PL是高通量光子仪器的重要进展。
英文摘要
FIRST-PL (Fibered Imager foR a Single Telescope - Photonic Lantern) is a newly commissioned visible-light instrument on Subaru/SCExAO achieving spectroscopy below the diffraction limit. The instrument uses a Photonic Lantern (PL)-converting multimode fiber into 19 single-mode outputs-feeding a mid-resolution spectrograph (R 3000, 630-790 nm). On-sky performance demonstrates 40% injection efficiency at 680 nm (Strehl 30%) and 12x throughput improvement over single-mode fibers. Three operational modes enable spectro-astrometry (50 microarcseconds precision demonstrated on beta-CMi), image reconstruction, and high-contrast imaging. FIRST-PL represents a significant advancement in high-throughput photonic instrumentation.