纳米结构调制平面高光谱分辨率分光偏振计
Nanostructure-modulated planar high spectral resolution spectro-polarimeter
摘要：
我们提出了一种基于法布里-珀罗腔的平面偏振光谱仪，该腔具有嵌入式偏振敏感的高折射率纳米结构。本文介绍了一个$7~μ$ m厚的3波段2线偏振分光偏振系统。在此基础上，从理论上提出了一种优化设计方案，估计带宽为127 nm，光谱分辨率为1 nm的系统能够重建前三个斯托克斯参量\textcolor{black}{with a signal-to-noise ratio of -13.14~dB with respect to the the shot noise limited SNR}。像素化分光偏振系统可以直接集成在传感器上，从而能够适用于各种小型化光学设备，包括但不限于用于地球观测的卫星。
英文摘要：
We present a planar spectro-polarimeter based on Fabry-P{é}rot cavities with embedded polarization-sensitive high-index nanostructures. A $7~μ$m-thick spectro-polarimetric system for 3 spectral bands and 2 linear polarization states is experimentally demonstrated. Furthermore, an optimal design is theoretically proposed, estimating that a system with a bandwidth of 127~nm and a spectral resolution of 1~nm is able to reconstruct the first three Stokes parameters \textcolor{black}{with a signal-to-noise ratio of -13.14~dB with respect to the the shot noise limited SNR}. The pixelated spectro-polarimetric system can be directly integrated on a sensor, thus enabling applicability in a variety of miniaturized optical devices, including but not limited to satellites for Earth observation.
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