Angle-selective chiral absorption induced by diffractive coupling in metasurfaces
| Autor: | Jiaojun Meng, Zhenqing Zhang, Wenxing Liu, Yunhui Li, Yong Sun, Zhenquan Lai, Tianbao Yu |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Optics Letters. 47:5385 |
| ISSN: | 1539-4794 0146-9592 |
| DOI: | 10.1364/ol.472717 |
| Popis: | Here we report that a simple chiral metasurface with twisted metallic cut-wire arrays enables highly efficient and continuously tunable chiral absorption over a broad spectral range by scanning the incidence angle over a few degrees. The angle-selective chiral absorption results from the surface plasmon resonance (SPR) excited by diffractive effects of the metasurface. The diffraction-assisted chiral metasurface provides a straightforward strategy for achieving dynamically tunable chiral devices and offers intriguing possibilities for various applications in on-chip chiral detectors/emitters, chiral spectrometers, chiral lasers, and so on. |
| Databáze: | OpenAIRE |
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