Nature-inspired chiral metasurfaces for circular polarization detection and full-Stokes polarimetric measurements
| Autor: | Ali Basiri, Joe V. Carpenter, Yu Yao, Zachary C. Holman, Jing Bai, Xiahui Chen, Chao Wang, Pouya Amrollahi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
lcsh:Applied optics. Photonics
Materials science Polarimetry Physics::Optics 02 engineering and technology 01 natural sciences Article law.invention 010309 optics law 0103 physical sciences Insertion loss lcsh:QC350-467 Circular polarization Extinction ratio business.industry Linear polarization Electronics photonics and device physics Metamaterial lcsh:TA1501-1820 Polarizer 021001 nanoscience & nanotechnology Polarization (waves) Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Optics and photonics Optoelectronics 0210 nano-technology business lcsh:Optics. Light |
| Zdroj: | Light: Science & Applications, Vol 8, Iss 1, Pp 1-11 (2019) Light, Science & Applications |
| ISSN: | 2047-7538 |
| Popis: | 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 µm). 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. Metasurfaces: Inspired by nature Inspired by the polarization-sensitive vision of the compound eyes in a marine crustacean called the Mantis Shrimp, researchers from Arizona State University, US have designed a chiral metasurface for manipulating the polarization of light. The metasurface design consists of a thin nanostructured silicon layer, a dielectric spacer layer and a gold nanowire polarizer, and has a total thickness of less than 1 micrometer. This thin planar surface offers low optical loss with a transmission as high as 80% in the near-infrared wavelength range, and acts as a circular polarization filter with an extinction ratio as high as 35. The circular polarization filters, in combination with linear polarization filters, can enable chip-scale polarimeters for sensing the polarization state of light. This on-chip integrated approach could prove useful in ultra-compact devices for advanced imaging and sensing applications. |
| Databáze: | OpenAIRE |
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