Tunable Extraordinary Optical Transmission in a Metal Film Perforated with Two-Level Subwavelength Cylindrical Holes

Zhang, Xiangnan; Liu, Guiqiang; Hu, Ying; Liu, Zhengqi; Chen, Yuanhao; Cai, Zhengjie; Liu, Xiaoshan; Gu, Grace X.; Fu, Guolan

doi:10.1007/s11468-014-9725-0

Cited by 16 publications

(11 citation statements)

References 29 publications

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“…The results of the above papers show that the influence of cuts, bars and bumps in the slit on odd and even modes are different, which lead to changes of the slits' effective length and phase difference, so that the dips in transmission spectrum (namely the phase resonances) will arise. Another way to achieve compound metallic nano-structures is to adjust the dielectric environment, and the transmission behaviors can be effectively tailored by filling different dielectric medium in the slits and holes [20]- [22].…”

Section: Introductionmentioning

confidence: 99%

Sharp Multiple-Phase Resonances in a Plasmonic Compound Grating With Multislits

2018

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Transmission properties of light through a plasmonic grating with multislits are investigated. The results show that sharp phase resonance (PR) and multiphase resonance (MPR) for each mode at multiple frequencies are achieved and effectively tailored only by adjusting the slight difference of the multislit widths; the values of the PR dips are almost zero. Based on the field distributions, Fabry-Pérot-resonant and phase-resonant mechanisms have been suggested for the physical origins of the observations qualitatively. In addition, we can realize the control of light spreading through an arbitrary slit; a multichannel selector is modeled and described. Compared with the conventional plasmonic compound grating, this multislit grating with different slit widths has obvious advantages, such as simple structure, single material composition, and better realizability. PR and MPR can be achieved at multiple frequencies.

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Section: Introductionmentioning

confidence: 99%

Sharp Multiple-Phase Resonances in a Plasmonic Compound Grating With Multislits

2018

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“…But, the increased thickness t of Au spacers can lead to an increase in length of air nano-cavities in between them. Therefore, the periodic oscillations of center wavelengths for these resonant dips can be attributed to the resonant cavity modes formed in the nanoholes between adjacent Au spacers [24,36].…”

Section: Resultsmentioning

confidence: 98%

“…Localized surface plasmon resonances (LSPRs) have also been well studied in various metallic nanoparticles with sizes much smaller than the optical diffraction limit [23][24][25][26]. Metallic nanoparticles have been demonstrated with high susceptibility to the change in RI of surrounding mediums, and their RI sensitivity can be largely enhanced by optimizing the shapes, sizes, and arrangement of metallic nanoparticles [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Multi-Band High Refractive Index Susceptibility of Plasmonic Structures with Network-Type Metasurface

Liu

et al. 2015

Plasmonics

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We theoretically propose a simple plasmonic structure with network-type metasurface consisting of double-layer metal-dielectric network-type metasurface on the two-layer dielectric films. Multiple reflection bands with minimum full width at half maximum of 3 nm are achieved in the visible and near-infrared regions due to the excitation and hybridized coupling of localized surface plasmons, photonic mode, and optical cavity mode. The plasmonic structure with network-type metasurface also shows highly tunable refractive index sensing performance. The maximum sensitivity to the refractive index (RI) change reaches to 596 nm/RIU (RIU: refractive index unit). The figure of merit can reach as high as 68.57. These results show that the plasmonic structure with networktype metasurface could pave a new way for the highperformance multi-band devices such as sensors and filters.

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“…As shown in Figure 2 , fi rst, the incident THz wave induced the current around the hole of p-CCW to make the H-fi eld built up inside the hole. This H-fi eld well confi ned within the hole of p-CCW would have the high E-fi eld focused at the hole of p-CCW which resulted in extraordinary transmission of THz wave, [29][30][31][32][33][34] generating EIT analogue from the proposed metamaterial. Therefore, the EIT phenomenon of the proposed selfcomplimentary meta-atom could be controlled by the hole size of p-CCW pattern which was assumed to determine the degree of the focus of E-fi eld within the hole by the localized H-fi eld at the resonance.…”

Section: Full Paper Full Paper Full Papermentioning

confidence: 99%

Electromagnetically Induced Transparency Analogue by Self‐Complementary Terahertz Meta‐Atom

Jung

Choi

et al. 2016

Advanced Optical Materials

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phenomena of metamaterials could be utilized for optical devices, such as slow light device, [10][11][12][13][14] nonlinear optics, [15][16][17] or novel optical sensors. [18][19][20][21] However, conventional EIT analogues from these metamaterials could be generated only by the destructive interference between asymmetrically split two half-rings or between bright and dark meta-atoms to produce the sharp transmission peak within the refl ection spectral window. For this reason, though the sharp transmission peak could be formed at the specifi c refl ective spectrum due to their origins of the destructive interference, these EIT analogues merely transmitted the light from their 2D or 3D array structures without focusing or enhancement of the incident light.In this paper, we proposed a new way to achieve EIT-like spectral properties from a single self-complimentary terahertz meta-atom by integrating cut-wire pair with a pseudo-complimentary cut-wire structure within a unit cell. Different from the conventional EIT analogues using the destructive interference between bright and dark meta-atoms, the induced current by the incident THz wave could generate a localized magnetic fi eld (H-fi eld) inside the hole of the pseudo-complimentary cut-wire, and accordingly electric fi eld (E-fi eld) was highly enhanced and focused at edges of the hole to achieve EIT-like properties in the proposed self-complimentary meta-atom structure.Therefore, by exciting both cut-wire and its complimentary components unifi ed in our self-complimentary single metaatom simultaneously with the incident THz wave, we showed that the EIT-like spectral properties could be achieved through the localized H-fi eld at the resonance which could focus E-fi elds out of the orthogonally placed cut-wires into the hole of the pseudo-complimentary cut-wire in a unit cell. Note that since the complimentary cut-wire structure in the proposed metaatom was not formed as the hole on the full metal sheet but was formed by being surrounded by cut-wires, it was named as the pseudo-complementary cut-wire. The detailed effects of the cut-wire width on the spectral properties were discussed in the Supporting Information. Design and Analysis of Self-Complementary Meta-AtomAs shown in Figure 1 , we prepared a cut-wire (CW) pair and pseudo-complementary cut-wire (p-CCW) pattern, andIn the past years, many researchers have tried to realize the electromagnetically induced transparency (EIT) phenomena from the metamaterial arrays for the attractable applications such as slow light devices, novel optical communication systems, and nonlinear optical devices. Most of metamaterial enabled EIT analogues reported so far are based on the destructive interference between the bright and dark meta-atoms. Whether they are located on the same plane or off the plane, EIT-like properties can be achieved only by breaking the symmetry between the bright and dark meta-atoms. In this study, a novel self-complimentary terahertz meta-atom is developed by combining cut-wire resonators and its pse...

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Tunable Extraordinary Optical Transmission in a Metal Film Perforated with Two-Level Subwavelength Cylindrical Holes

Cited by 16 publications

References 29 publications

Sharp Multiple-Phase Resonances in a Plasmonic Compound Grating With Multislits

Sharp Multiple-Phase Resonances in a Plasmonic Compound Grating With Multislits

Multi-Band High Refractive Index Susceptibility of Plasmonic Structures with Network-Type Metasurface

Electromagnetically Induced Transparency Analogue by Self‐Complementary Terahertz Meta‐Atom

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