3D cross-bended metasurfaces with polarization insensitivity and high-Q resonances
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3D cross-bended metasurfaces with polarization insensitivity and high-Q resonances. / Pan, Ruhao; Du, Shuo; Liu, Zhe; Zhu, Wei; Li, Ce; Gu, Changzhi; Li, Junjie.
In: Journal of Optics, Vol. 22, No. 10, 105103, 01.10.2020.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - 3D cross-bended metasurfaces with polarization insensitivity and high-Q resonances
AU - Pan, Ruhao
AU - Du, Shuo
AU - Liu, Zhe
AU - Zhu, Wei
AU - Li, Ce
AU - Gu, Changzhi
AU - Li, Junjie
N1 - Hy-Q
PY - 2020/10/1
Y1 - 2020/10/1
N2 - 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.
AB - 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.
KW - FIB defined Origami
KW - high quality factor
KW - Fano resonance
KW - 3D bended metasurface
KW - METAMATERIALS
KW - OPTICS
U2 - 10.1088/2040-8986/abad51
DO - 10.1088/2040-8986/abad51
M3 - Journal article
VL - 22
JO - Journal of Optics
JF - Journal of Optics
SN - 2040-8978
IS - 10
M1 - 105103
ER -
ID: 249300787