Crosstalk-free achromatic full Stokes imaging polarimetry metasurface enabled by polarization-dependent phase optimization

• DOI: 10.29026/oea.2022.220058
• Publication Date: 2022-09-30T09:06:09Z
• Authors: Yaxin Zhang; ; Mingbo Pu; Jinjin Jin; Xinjian Lu; Yinghui Guo; Jixiang Cai; Fei Zhang; Yingli Ha; Qiong He; Mingfeng Xu; Xiong Li; Xiaoliang Ma; Xiangang Luo
• Keywords: Achromatic lens; Stokes parameters; Polarimeter

Imaging polarimetry is one of the most widely used analytical technologies for object detection and analysis. To date, metasurface-based techniques are severely limited by narrow operating bandwidths inevitable crosstalk, leading to detrimental effects on imaging quality measurement accuracy. Here, we propose a crosstalk-free broadband achromatic full Stokes polarimeter consisting polarization-sensitive dielectric metalenses, implemented principle polarization-dependent phase optimization. Compared with single-polarization optimization method, average crosstalk has been reduced over three times under incident light arbitrary polarization ranging from 9 μm 12 μm, which guarantees state more precisely. The experimental results indicate that designed metalenses can effectively eliminate chromatic aberration selectivity negligible crosstalk. measured relative errors 7.08%, 8.62%, 7.15%, 7.59% at 9.3, 9.6, 10.3, 10.6 respectively. Simultaneously, capability device also verified. This work expected have potential applications in wavefront detection, remote sensing, light-field imaging, so forth.