3D cross-bended metasurfaces with polarization insensitivity and high-Q resonances
Research output: Contribution to journal › Journal article › peer-review
Metasurfaces with high-quality (HQ) resonances are always desired for their potential applications in biomedicine and photonic devices. However, the realization of HQ near-infrared metasurfaces with polarization insensitivity has faced problems with metallic loss, large feature size and limited configurations. In order to build up HQ metasurfaces working at the near-infrared range, we propose a 3D bended metasurface configuration consisting of a metallic supported frame and cross vertical split ring resonators, which are fabricated by a focused ion beam defined origami method. The relationship between Q factor/modulation depth of the resonances and the geometric morphology of the meta-atoms are established, and its polarization insensitivity is verified. Two HQ resonances with 22%/26% modulation depth and the quality factor of 24/30 at 1.75/2.5 mu m are experimentally obtained in the optimized metasurface. In addition, a polarization insensitive Fano resonance with large modulation depth can also be observed at the low frequency band, which can be modulated by tuning the bending angle. This HQ 3D cross-bended metasurface will create a more flexible approach to design versatile micro/nano-photonic devices and biological components.
Original language | English |
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Article number | 105103 |
Journal | Journal of Optics |
Volume | 22 |
Issue number | 10 |
Number of pages | 6 |
ISSN | 2040-8978 |
DOIs | |
Publication status | Published - 1 Oct 2020 |
Bibliographical note
Hy-Q
- FIB defined Origami, high quality factor, Fano resonance, 3D bended metasurface, METAMATERIALS, OPTICS
Research areas
ID: 249300787