Nature-inspired chiral metasurfaces for circular polarization detection and full-Stokes polarimetric measurements
Nature-inspired chiral metasurfaces for circular polarization detection and full-Stokes polarimetric measurements
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DOI：
10.1038/s41377-019-0184-4
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发表时间：
2019-08-28
影响因子：
19.4
通讯作者：
Yao, Yu
中科院分区：
文献类型：
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作者：
Basiri, Ali;Chen, Xiahui;Yao, Yu
光偏振态的操纵和表征在量子通信和计算、光谱学、生物灵感导航和成像等领域的许多应用中都是必不可少的。手性超材料和超表面为圆偏振光的产生、操作和检测提供了超致密的器件。在此，我们报道了具有强手性光学效应和低插入损耗的仿生手性准表面。实验证明，在近红外波段，亚微米厚的圆偏振滤光片的峰值消光比可达35，最大传输效率接近80%(最佳工作波长可在1.3-1.6微米范围内设计)。我们还将微尺度圆偏振滤光片与线偏振滤光片进行了单片集成，实现了对任意偏振态的光的全斯托克斯偏振测量。我们的设计具有易于片上集成、超紧凑的占地面积、可扩展性和宽波长覆盖范围的优势，为基于量子的光学计算和信息处理、圆二色谱、生物医学诊断和遥感应用促进芯片集成的偏振仪和偏振成像系统带来了巨大的希望。
The manipulation and characterization of light polarization states are essential for many applications in quantum communication and computing, spectroscopy, bioinspired navigation, and imaging. Chiral metamaterials and metasurfaces facilitate ultracompact devices for circularly polarized light generation, manipulation, and detection. Herein, we report bioinspired chiral metasurfaces with both strong chiral optical effects and low insertion loss. We experimentally demonstrated submicron-thick circularly polarized light filters with peak extinction ratios up to 35 and maximum transmission efficiencies close to 80% at near-infrared wavelengths (the best operational wavelengths can be engineered in the range of 1.3-1.6 mu m). We also monolithically integrated the microscale circular polarization filters with linear polarization filters to perform full-Stokes polarimetric measurements of light with arbitrary polarization states. With the advantages of easy on-chip integration, ultracompact footprints, scalability, and broad wavelength coverage, our designs hold great promise for facilitating chip-integrated polarimeters and polarimetric imaging systems for quantum-based optical computing and information processing, circular dichroism spectroscopy, biomedical diagnosis, and remote sensing applications.