Studying localized surface plasmon resonances in the THz region for subwavelength spiral disks

被引：3
|
作者：
Gerasimov, V. V. [1 ,2 ]
Kuznetsov, S. A. [1 ,2 ,3 ]
Lemzyakov, A. G. [1 ]
Hafizov, R. R. [1 ,2 ]
机构：
[1] RAS, Siberian Branch, Budker Inst Nucl Phys, 11 Ac Lavrentieva Ave, Novosibirsk 630090, Russia
[2] Novosibirsk State Univ, 2 Pirogova Ave, Novosibirsk 630090, Russia
[3] RAS, Novosibirsk Branch TDIAM, Rzhanov Inst Semicond Phys SB, 2-1 Ac Lavrentieva Ave, Novosibirsk, Russia
来源：
METANANO 2019 | 2020年 / 1461卷
基金：
俄罗斯科学基金会;
关键词：
D O I：
10.1088/1742-6596/1461/1/012048
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Spoof localized surface plasmon resonances (LSPRs) in the THz range are promising for bio-sensing and spectroscopy. Using long spiral grooves allows improving the surface mode confinement of LSPRs in the long-wavelength region. Our numerical simulations of sub-wavelength spiral gold disks in the range of 0.04.6 THz have shown that in case of Drude conductivity and normal incidence of EM radiation only the first- and second-order dipole localized surface plasmon resonances (LSPRs) are excited. High order resonances arise at inclined incidence. The spectra and 2D distributions of the EM field at the resonant frequencies depend on the number of spiral arms and symmetry of the spiral structure.
引用
收藏
页数：4
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