Plasmonic Analog of Electromagnetically Induced Transparency in Stereo Metamaterials

Liang, Dachuan; Zhang, Huifang; Gu, Jianqiang; Li, Yanfeng; Tian, Zhen; Ouyang, Chunmei; Han, Jiaguang; Zhang, Weili

doi:10.1109/jstqe.2017.2657681

Cited by 22 publications

(9 citation statements)

References 42 publications

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“…phenomena further testify the low-loss EIT resonance observed from the transmission spectra, 29,30 as shown in Fig. 8(c).…”

Section: 31supporting

confidence: 59%

“…It is seen that the n g value attains 647 in the transparency window, which indicates that the light velocity can be slowed down by a factor of 647, 29,30 related to the strong phase dispersion of EIT resonance. 4,5,7,29,30 The effective group index in our structure is much larger than the values reported in classical EIT schemes. [6][7][8]11,25 Additionally, it is found that the Im(n eff ) is very small in the EIT window, i.e., the absorption loss is very low.…”

Section: -28mentioning

confidence: 95%

“…As a consequence, the overall radiation losses in the metamaterial are dramatically decreased, 6,7,11,[27][28][29][30] the transmission is enhanced, 6,7,11,[27][28][29][30] and the low-loss EIT resonance is obtained. 6,7,17,25 As previously discussed, the destructive coupling between electric and toroidal dipoles 17,25 leads to low-loss EIT resonance.…”

Section: 31mentioning

confidence: 99%

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A low-loss electromagnetically induced transparency (EIT) metamaterial based on coupling between electric and toroidal dipoles

et al. 2017

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Herein, an effective approach to construct a low-loss metamaterial by incorporating an electric toroidal dipole response into electromagnetically induced transparency (EIT) effect has been proposed, which is numerically and experimentally demonstrated. The low-loss metamaterial consists of an I-type cut wire (ICW) and two spiral ring resonators (SRRs). It is numerically verified that the low-loss electric toroidal dipole resonance can be excited by rational rotation of SRR, accompanied by a circumfluent magnetic field distribution. Via subtle geometry adjustment, we realized the spectral overlap of electric and toroidal dipoles and then observed a low-loss EIT resonance based on destructive couplings between them. In addition, the effect of parametric variation for the metamaterial on EIT resonance is investigated. In particular, we have experimentally verified that low-loss EIT resonance is also obtained by altering the rotation axis of two SRRs. By scaling down our structure, our design also applies to higher frequencies. This low-loss scheme provides possibilities for the design of low-loss optical devices and highly sensitive sensors.

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“…phenomena further testify the low-loss EIT resonance observed from the transmission spectra, 29,30 as shown in Fig. 8(c).…”

Section: 31supporting

confidence: 59%

Section: -28mentioning

confidence: 95%

Section: 31mentioning

confidence: 99%

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A low-loss electromagnetically induced transparency (EIT) metamaterial based on coupling between electric and toroidal dipoles

et al. 2017

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“…For these reasons, the SDSRR sensor performs much better than other vertical metamaterial sensors. Although the vertical SRR structures had been analyzed, fabricated, and presented by several groups [50,51,52,53,54,55,56], the complexity of vertical metamaterial structure and our limited processing conditions results in lacking of test results. An assumption for SDSRR structure processing is introduced in the Supplementary documentation, but future studies will need to verify this processing.…”

Section: Discussionmentioning

confidence: 99%

Tunable Dual-Band Ultrasensitive Stereo Metamaterial Terahertz Sensor

Cao

Wang

et al. 2020

IEEE Access

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To overcome the effect of analyte thickness and limitation of single wavelength sensing, we propose an ultra-sensitive stereo metamaterial biosensor with double resonance frequencies based on coupling electric resonance and magnetic resonance. The electromagnetic analysis demonstrates that the double resonance coupling, induced by the structural the stereo double-layer design, can significantly improve sensitive biosensing at the terahertz frequency. The results show that by changing the size of the structure, each resonance frequency can be independently tuned in the range of 0.5-1.8 THz and the maximum refractive index sensitivity is 930.4 GHz/RIU. These results have significant effects on the detection of samples with different frequency points. Our ultra-sensitive stereo metamaterial structure has unparalleled potential and application in biomolecule detection and differentiation.

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“…Although the out-of-plane magnetic field component can be achieved by oblique incidence [15], [16], the weak projection of the magnetic field can only lead to a finite magnetic spectral response. Another way is to make the structure ''stand up'' so as to experience more magnetic field [17], [18], but it is very challenging in fabrications.…”

Section: Introductionmentioning

confidence: 99%

Terahertz Plasmon-Induced Transparency Effect in Parallel Plate Waveguide

Zhang

et al. 2021

IEEE Access

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Recently reported metamaterial analogues of plasmon-induced transparency are very promising in designing novel optical components, such as slow-light devices and optical switches. However, most of the previous works mainly focus on manipulating the PIT effects using planar structures in the free space under normal incidence, where the resonances are mostly induced by the incident electric fields. Here, we present a PIT analogue in a waveguide system in the terahertz regime by inserting coupled split-ring resonator pairs into a tapered parallel plate waveguide. Different from the free-space cases, the incident magnetic fields can also play an important role here. By carefully arranging the relative orientations of the coupled split-ring resonators in each pair, giant modulation of the PIT effect is observed. This straightforward approach may enable novel devices for integrated terahertz devices.INDEX TERMS Terahertz, metamaterials, plasmon-induced transparency, parallel plate waveguide.

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Plasmonic Analog of Electromagnetically Induced Transparency in Stereo Metamaterials

Cited by 22 publications

References 42 publications

A low-loss electromagnetically induced transparency (EIT) metamaterial based on coupling between electric and toroidal dipoles

A low-loss electromagnetically induced transparency (EIT) metamaterial based on coupling between electric and toroidal dipoles

Tunable Dual-Band Ultrasensitive Stereo Metamaterial Terahertz Sensor

Terahertz Plasmon-Induced Transparency Effect in Parallel Plate Waveguide

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