Manipulating terahertz electromagnetic induced transparency through parallel plate waveguide cavities

Chen, Lin; Xu, Jiaming; Gao, Chunmei; Zang, Xiaofei; Cai, Bin; Zhu, Yiming

doi:10.1063/1.4852115

Cited by 39 publications

(25 citation statements)

References 21 publications

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“…The theoretical results according to Eqs. (17) and (18) show good agreement with the experimental results. The discrepancy of the measured resonant frequency with the theoretical value can be described by the following reason.…”

Section: Resultssupporting

confidence: 87%

“…Thus, the effective permittivity of the metal PC surface increases, leading to the fact that the measured resonant frequency is lower than that expected from Eqs. (17) and (18). Another reason of the discrepancy might arise from imperfections in the fabrication.…”

Section: Resultsmentioning

confidence: 93%

“…(17) and (18)) of the dependence of the resonant frequency f sp on the incident angle are shown in Fig. 5.…”

Section: Resultsmentioning

confidence: 97%

“…(17) and (18), the resonant frequencies f sp for the strong SP modes ( À1,0) (ΓM) and (0, À 1) (ΓK) are simplified in the form:…”

Section: Resultsmentioning

confidence: 99%

“…The transmission measurement was carried out using a terahertz time domain spectroscopy (THz-TDS) system [15][16][17]. A collimated THz wave, which was radiated from the emitter of a photoconductive antenna pumped by a 100-fs 800 nm laser pulse, was irradiated on the sample.…”

Section: Resultsmentioning

confidence: 99%

See 4 more Smart Citations

Characterization of photonic bands in metal photonic crystal slabs

Chen

Truong

Cheng

et al. 2014

Optics Communications

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Section: Resultssupporting

confidence: 87%

Section: Resultsmentioning

confidence: 93%

“…(17) and (18)) of the dependence of the resonant frequency f sp on the incident angle are shown in Fig. 5.…”

Section: Resultsmentioning

confidence: 97%

“…(17) and (18), the resonant frequencies f sp for the strong SP modes ( À1,0) (ΓM) and (0, À 1) (ΓK) are simplified in the form:…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 3 more Smart Citations

Characterization of photonic bands in metal photonic crystal slabs

Chen

Truong

Cheng

et al. 2014

Optics Communications

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Tailoring the Electromagnetically Induced Transparency and Absorbance in Coupled Fano–Lorentzian Metasurfaces: A Classical Analog of a Four‐Level Tripod Quantum System

Manjappa

Singh

et al. 2016

Advanced Optical Materials

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CommuniCationworks, double EIT has been studied mostly in multi-resonator systems. [21][22][23][24] For instance, it has been realized from the hybridization between two dark modes in a bright-dark-dark configuration or as a net coupling effect in a bright-bright-dark configuration. [21][22][23] We explore the dual transparency and absorbance effect in two resonator system by concentrically coupling a Lorentzian SRR (inner) and a Fano ASRR (outer) resonator, which results in dual electromagnetically induced transparency and strong absorbance in the transmitted spectra. We further engineer the amplitude and the width of the absorbance window by gradually varying the size of the inner SRR and thus changing the coupling between the Fano and the Lorentzian resonators. A four-level tripod quantum interference model via bright-darkdark state coupling explained the observed results in the DEIT metamaterial. Such planar terahertz metasurface associated with both of electromagnetically induced transparency and absorbance could have the potential to be used as a multi-band slow-light devices, narrowband absorbers, and electromagnetic filters. [25] The experimental design consists of several samples of metasurface arrays, as shown in Figure 1a. The unit cell contains two concentric meta-atoms that constitute the metamolecule, the outer one being a Fano resonant ASRR and the inner being the LC resonant SRR. [26] The metasurface samples were fabricated on a high resistivity (4 kΩ cm) double-side polished silicon substrate based on conventional photolithography technique (see Experimental Section for details). In the Fano-Lorentzian coupled system, we kept the Fano resonator and the lattice constant fixed in order to excite a consistent EIT window. By tailoring the size of the Lorentzian LC resonator, the LC resonance was swept across the EIT band which enabled the tuning of the coupling between the two resonators, thus giving rise to a dual-EIT peak and a tunable absorbance band. [27] A series of planar metasurface samples with varying inner SRR size within a fixed size ASRR were designed and fabricated. The length of SRR l 2 is varied from 19 to 22 μm, while maintaining the other geometrical parameters constant as P = 70 μm, l 1 = 60 μm, w = 6 μm, d = 10 μm, and g = 3 μm. A single resonant transparency band opens up due to symmetry breaking in ASRR, [13] which is characterized as the EIT peak while the SRR exhibits a Lorentzian LC resonance dip. The two resonators are coupled by tailoring their design in such a way that their resonance frequencies are exactly identical. In such a system, the frequency detuning of either the EIT peak or the LC resonance dip significantly influences the spectral position and strength of the transmission dip that corresponds to the absorbance window. The exploration of novel photonic devices over the past decade has focused on reproducing the classical and quantum effects in special exotic materials rather than in conventional optical materials. In recent times, metamaterial and plasmonic syste...

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Crossover from plasmonic analogue of Fano resonance to Autler–Townes splitting in a double guide mode resonances system

Wei

Jian

2017

Appl. Phys. B

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Manipulating terahertz electromagnetic induced transparency through parallel plate waveguide cavities

Cited by 39 publications

References 21 publications

Characterization of photonic bands in metal photonic crystal slabs

Characterization of photonic bands in metal photonic crystal slabs

Tailoring the Electromagnetically Induced Transparency and Absorbance in Coupled Fano–Lorentzian Metasurfaces: A Classical Analog of a Four‐Level Tripod Quantum System

Crossover from plasmonic analogue of Fano resonance to Autler–Townes splitting in a double guide mode resonances system

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