论文标题
大气分散校正器设计，具有1至4微米的MilliarcSecond级精度
An Atmospheric Dispersion Corrector Design with Milliarcsecond-Level Precision from 1 to 4 microns for High Dispersion Coronagraphy
论文作者
论文摘要
差异大气折射（DAR）限制了可以耦合到单个模式纤维的光量，并为任何纤维跟踪系统提供了其他并发症。我们提出了一种基于两个反向旋转棱镜的大气分散校正器（ADC）设计，以适合凯克行星成像仪和特征器（KPIC）的系外行星光谱的需求，从1.1到4.2微米。由于巧妙的效果很强，我们发现在与根据第一原理计算的DAR模型进行比较时，DAR的默认Zemax处方最多不准确15个MAS。使用第一原则模型，我们开发了自己的自定义ADC优化解决方案，并在任何科学频段（J，K，L）中达到少于4个MAS剩余分散剂，至60度的Zenith角度，而在跟踪频段（H）中，整个时间都保持不到3 mas的残留分散体（H），并且在跟踪和科学乐队之间的残留分散量少于2个MAS。
Differential atmospheric refraction (DAR) limits the amount of light that can be coupled into a single mode fiber and provides additional complications for any fiber tracking system. We present an atmospheric dispersion corrector (ADC) design based off of two counter-rotating prisms to fit the needs of exoplanet spectroscopy for the Keck Planet Imager and Characterizer (KPIC) from 1.1 to 4.2 microns. Due to strong telluric effects, we find that the default Zemax prescription for DAR between 2 and 4.2 microns to be inaccurate up to 15 mas when comparing against DAR models computed from first principles. Using first-principle models, we developed our own custom ADC optimization solution and achieve less than 4 mas residual dispersion in any individual science band (J, K, L) down to 60 degree zenith angles, while the whole time maintaining less than 3 mas of residual dispersion in the tracking band (H) and less than 2 mas of residual dispersion between the tracking and science bands.
