Dynamically adjusting plasmon-induced transparency and slow light based on graphene meta-surface by bright–dark mode coupling

2018 ◽  
Vol 382 (30) ◽  
pp. 1978-1981 ◽  
Author(s):  
Maoyong Cao ◽  
Haifeng Wang ◽  
Lei Li
Keyword(s):  
Mode Coupling ◽  
Slow Light ◽  
Dark Mode ◽  
Induced Transparency ◽  
Plasmon Induced Transparency

scholarly journals Dual-Tunable Polarization Insensitive Electromagnetically Induced Transparency in Metamaterials

2021 ◽  
Author(s):  
Renxia Ning ◽  
Zhiqiang Xiao ◽  
Zhenhai Chen ◽  
Wei Huang
Keyword(s):  
Vanadium Dioxide ◽  
Mode Coupling ◽  
Slow Light ◽  
Chemical Potential ◽  
Electromagnetically Induced Transparency ◽  
Dark Mode ◽  
Potential Applications ◽  
Polarization Insensitive ◽  
Terahertz Devices ◽  
Induced Transparency

AbstractA multilayer structure of a square ring of graphene with nesting vanadium dioxide (VO2) was investigated in this study. This structure exhibits electromagnetically induced transparency (EIT), which stems from a bright mode coupling with a dark mode. The permittivity values of graphene and VO2 can be modulated via chemical potential and temperature, respectively. The EIT effect can be tuned based on the chemical potential of graphene and temperature of VO2, resulting in a dual-tunable EIT effect. Simulation results confirmed that this dual-tunable EIT phenomenon is insensitive to polarization. These results may have potential applications in terahertz devices, such as slow light devices, switching devices, and sensors.

scholarly journals Dynamically Tunable Plasmon-Induced Transparency Based on Radiative–Radiative-Coupling in a Terahertz Metal–Graphene Metamaterial

Crystals ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 146 ◽  
Author(s):  
Guanqi Wang ◽  
Xianbin Zhang ◽  
Lei Zhang ◽  
Xuyan Wei
Keyword(s):  
Slow Light ◽  
Ring Resonator ◽  
New Technologies ◽  
Single Layer ◽  
Split Ring Resonator ◽  
Single Layer Graphene ◽  
Dark Mode ◽  
Radiative Coupling ◽  
Induced Transparency ◽  
Plasmon Induced Transparency

New technologies and materials with superior characteristics impel great development of functional devices in the terahertz field. The dynamically tunable plasmon-induced transparency (PIT) based on radiative–radiative-coupling in terahertz hybrid metal–graphene metamaterial is numerically investigated in this paper. For the active manipulation of the PIT device, the single-layer graphene is integrated into the proposed structure consisting of the split-ring-resonator (SRR) and the closed-ring-resonator (CRR). Dynamically adjusting Fermi energy in graphene leads to modulation of the PIT window, allowing for the active control of the group delay. From the simulated electrical field distributions and effective circuit model to analyze, the transmission spectrum modulation can be attributed to the altering in the energy loss of the dark mode resonator through the conduction effect of the graphene layer. Our work offers theoretical references for the development of slow light terahertz devices in the future.

scholarly journals Electromagnetically Induced Transparency-Like Effect by Dark-Dark Mode Coupling

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1350
Author(s):  
Qiao Wang ◽  
Kaili Kuang ◽  
Huixuan Gao ◽  
Shuwen Chu ◽  
Li Yu ◽  
...  
Keyword(s):  
Mode Coupling ◽  
Slow Light ◽  
Electromagnetically Induced Transparency ◽  
Research Area ◽  
Destructive Interference ◽  
Dark Mode ◽  
Metal Grating ◽  
Layer 4 ◽  
Induced Transparency ◽  
Waveguide Resonance

Electromagnetically induced transparency-like (EIT-like) effect is a promising research area for applications of slow light, sensing and metamaterials. The EIT-like effect is generally formed by the destructive interference of bright-dark mode coupling and bright-bright mode coupling. There are seldom reports about EIT-like effect realized by the coupling of two dark modes. In this paper, we numerically and theoretically demonstrated that the EIT-like effect is achieved through dark-dark mode coupling of two waveguide resonances in a compound nanosystem with metal grating and multilayer structure. If we introduce |1〉, | 2 〉 and | 3 〉 to represent the surface plasmon polaritons (SPPs) resonance, waveguide resonance in layer 2, and waveguide resonance in layer 4, the destructive interference occurs between two pathways of | 0 〉 → | 1 〉 → | 2 〉 and | 0 〉 → | 1 〉 → | 2 〉 → | 3 〉 → | 2 〉 , where | 0 〉 is the ground state without excitation. Our work will stimulate more studies on EIT-like effect with dark-dark mode coupling in other systems.

Plasmon-Induced Transparency and Dispersionless Slow Light in a Novel Metamaterial

2015 ◽  
Vol 27 (11) ◽  
pp. 1177-1180 ◽  
Author(s):  
Jiakun Song ◽  
Jietao Liu ◽  
Yuzhi Song ◽  
Kangwen Li ◽  
Zuyin Zhang ◽  
...  
Keyword(s):  
Slow Light ◽  
Induced Transparency ◽  
Plasmon Induced Transparency

Dual plasmon-induced transparency and slow light effect in monolayer graphene structure with rectangular defects

2018 ◽  
Vol 52 (2) ◽  
pp. 025104 ◽  
Author(s):  
Hui Xu ◽  
Mingzhuo Zhao ◽  
Mingfei Zheng ◽  
Cuixiu Xiong ◽  
Baihui Zhang ◽  
...  
Keyword(s):  
Slow Light ◽  
Monolayer Graphene ◽  
Light Effect ◽  
Induced Transparency ◽  
Plasmon Induced Transparency

Slow-light analysis based on tunable plasmon-induced transparency in patterned black phosphorus metamaterial

2021 ◽  
Vol 38 (3) ◽  
pp. 412
Author(s):  
Kuan Wu ◽  
Hongjian Li ◽  
Chao Liu ◽  
Cuixiu Xiong ◽  
Banxian Ruan ◽  
...  
Keyword(s):  
Slow Light ◽  
Black Phosphorus ◽  
Induced Transparency ◽  
Plasmon Induced Transparency

scholarly journals Dual-Mode On-to-Off Modulation of Plasmon-Induced Transparency and Coupling Effect in Patterned Graphene-Based Terahertz Metasurface

2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Zhimin Liu ◽  
Enduo Gao ◽  
Zhenbin Zhang ◽  
Hongjian Li ◽  
Hui Xu ◽  
...  
Keyword(s):  
Slow Light ◽  
Coupling Effect ◽  
Structural Parameters ◽  
Fdtd Simulation ◽  
Destructive Interference ◽  
Dual Mode ◽  
Coupled Mode ◽  
Induced Transparency ◽  
Difference Time ◽  
Plasmon Induced Transparency

AbstractThe plasmon-induced transparency (PIT), which is destructive interference between the superradiation mode and the subradiation mode, is studied in patterned graphene-based terahertz metasurface composed of graphene ribbons and graphene strips. As the results of finite-difference time-domain (FDTD) simulation and coupled-mode theory (CMT) fitting, the PIT can be dynamically modulated by the dual-mode. The left (right) transmission dip is mainly tailored by the gate voltage applied to graphene ribbons (stripes), respectively, meaning a dual-mode on-to-off modulator is realized. Surprisingly, an absorbance of 50% and slow-light property of 0.7 ps are also achieved, demonstrating the proposed PIT metasurface has important applications in absorption and slow-light. In addition, coupling effects between the graphene ribbons and the graphene strips in PIT metasurface with different structural parameters also are studied in detail. Thus, the proposed structure provides a new basis for the dual-mode on-to-off multi-function modulators.

Wideband slow light based on plasmon-induced transparency at telecom frequency

2015 ◽  
Vol 351 ◽  
pp. 26-29 ◽  
Author(s):  
Chunlei Li ◽  
Dawei Qi ◽  
Yuxiao Wang ◽  
Xueru Zhang
Keyword(s):  
Slow Light ◽  
Induced Transparency ◽  
Plasmon Induced Transparency

scholarly journals Active Enhancement of Slow Light Based on Plasmon-Induced Transparency with Gain Materials

Materials ◽  
2018 ◽  
Vol 11 (6) ◽  
pp. 941 ◽  
Author(s):  
Zhaojian Zhang ◽  
Junbo Yang ◽  
Xin He ◽  
Yunxin Han ◽  
Jingjing Zhang ◽  
...  
Keyword(s):  
Slow Light ◽  
Induced Transparency ◽  
Active Enhancement ◽  
Plasmon Induced Transparency
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