Article
Optics
Weijun Wang, Lianghui Du, Jiang Li, Mingzhe Hu, Changlin Sun, Yajun Zhong, Gang Zhao, Zeren Li, Li-Guo Zhu, Jianquan Yao, Furi Ling
Summary: This paper investigates the terahertz characteristics of a p-Si hybrid metasurface device under avalanche breakdown effect, observing the disappearance of plasmon-induced transparency effect and dipole resonance suppression. The maximal modulation depth can reach up to 99.9% due to the avalanche effect, showing great potential for terahertz devices.
Article
Optics
Cheng-Jing Gao, Zi-Han Guo, Yuan-Zhe Sun, Hai-Feng Zhang
Summary: This study achieves polarization conversion of electromagnetic waves using metamaterials and observes electromagnetically induced transparency in the terahertz frequency range. By adjusting the structure of the metamaterial, control over different polarization waves is achieved, while also displaying characteristics of slow-light effect and high transmission.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Qiao Wang, Kaili Kuang, Huixuan Gao, Shuwen Chu, Li Yu, Wei Peng
Summary: This paper investigates the EIT-like effect achieved through the coupling of two waveguide resonances in a compound nanosystem. It demonstrates that destructive interference between two dark modes can lead to the realization of EIT-like effect. The findings suggest potential for further studies on EIT-like effect with dark-dark mode coupling in other systems.
Article
Chemistry, Physical
Jin Zhang, Zhenfei Li, Linda Shao, Fajun Xiao, Weiren Zhu
Summary: The study demonstrates the active modulation of EIT analog by integrating graphene into a microwave metamaterial for the first time, showing that the EIT peak can be dynamically controlled under a relatively low bias voltage applied on graphene. The continuous tuning of the EIT resonance strength is achieved by variably dampening the dark resonator using graphene.
Article
Chemistry, Physical
Jin Yue, Songlin Chen, Furi Ling, Jianquan Yao
Summary: This study investigates a plasmon-induced transparency (PIT) sample based on a hybrid structure of metasurface/BiFeO3/Si in the terahertz range, demonstrating a distinct transparency window with a modulation depth of 82% achievable through tuning the optical pumping power. The research sheds new light on exploring the multiferroic material BiFeO3 and expanding practical applications of BFO-based functional devices in the terahertz range.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Physics, Applied
Min Li, Cuixiu Xiong, Chao Liu, Biao Zeng, Banxian Ruan, Baihui Zhang, Enduo Gao, Hongjian Li
Summary: In this paper, an easily implemented monolayer graphene structure is proposed for achieving triple plasmon-induced transparency and absorption effects. By altering the Fermi energy and carrier mobility of graphene, the absorption intensity can be dynamically controlled over a broadband frequency range. The triple plasmon-induced absorption spectrum shows 20 times more absorption bands compared to monolayer graphene, with a sensitivity of 0.4 THz RIU-1 for terahertz plasmonic sensing applications.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Chemistry, Physical
Wu Zhang, Jiahan Lin, Xiaohui Fang, Yanxiao Lin, Kai Wang, Meng Zhang
Summary: In this paper, an active metamaterial demonstrating electromagnetically induced transparency (EIT) effect in the microwave regime is presented. By controlling the capacitance of a varactor diode, the frequency and peak-to-dip ratio of the transmission peak can be tuned.
Article
Optics
Xiaoqiang Su, Lijuan Dong, Jiajun He, Yucong Huang, Fusheng Deng, Lifeng Liu, Yunlong Shi, Quan Xu, Yanfeng Li
Summary: Metamaterial analogues of electromagnetically induced transparency (EIT) have remarkable properties in slow-wave and highly sensitive sensing. This study demonstrates an electrically tuned on-chip EIT analogue by coupling dynamic EIT modules with ultrathin corrugated metallic strips supporting spoof surface plasmon polaritons (SSPPs).
Article
Engineering, Electrical & Electronic
Zhao Chen, Yinli Wang, Zhiling Hou, Pengfei Zhang, Li Yu
Summary: A novel plasmonic nanosensor based on loaded slot cavity is proposed and studied. The presence of the load causes a red shift in the resonant wavelength, leading to enhanced sensitivity. The structure is applicable in actual biosensing and can be used for detecting blood plasma concentration, glucose concentration, ethanol temperature, and diseased cells with high sensitivity.
IEEE SENSORS JOURNAL
(2022)
Article
Physics, Multidisciplinary
Yiyuan Guo, Yiping Huo, Qiqiang Niu, Qian He, Xiangxiang Hao
Summary: Metal-dielectric-metal (MIM) waveguide coupling systems based on surface plasmon polaritons (SPPs) were studied, showing promising results for filter, slow light device, and photonic device integration applications. Filter bands were achieved in the transmission spectra, and the filter band width and range could be effectively tuned by changing the structure parameters, indicating good filtering efficiency and potential for meeting different filtering needs.
Article
Optics
Jing Wang, Peng Tan, Shuai Li, Guanchao Wang, Wenpeng Guo, Zhongxiang Zhou, Hao Tian
Summary: This study presents a tunable polarization-independent plasmon-induced transparency (PIT) metasurface based on connected half-ring and split-ring resonators, working in the terahertz band. By connecting the ring resonators and split-ring resonators, magnetic attenuation is avoided and a stronger PIT effect is achieved. The design could provide significant guidance in multifunctional active devices for terahertz communication.
Article
Optics
Chao Du, Di Zhou, Huan-Huan Guo, Yong-Qiang Pang, Hong-Yu Shi, Wen-Feng Liu, Charanjeet Singh, Sergei Trukhanov, Alex Trukhanov, Zhuo Xu
Summary: This paper introduces an active control electromagnetic modulator of EIT-like spectrum induced by metallic cut-wire metamaterial, utilizing rotational modulation to achieve switchable EIT behaviors. The study demonstrates detailed analyses of the microscopic response and advantages of EIT-like resonance frequency modulation based on actively controlled scattering operation.
OPTICS COMMUNICATIONS
(2021)
Article
Physics, Multidisciplinary
Di-Di Zhu, You Lv, Si-Ying Li, Hai-Feng Zhang
Summary: This study presents a Germanium (Ge) metastructure with switching features of broadband plasmon-induced transparency (PIT) and electromagnetically induced absorption (EIA). By utilizing the near-field coupling between the localized plasmon resonance and the Mie resonance, the metastructure achieves a wide transparent window and a wide absorption window through phase modulation. The introduction of a grid-like structure, additional dark mode loss, and a frequency selective surface further enhance the absorption bandwidth of the metastructure.
ANNALEN DER PHYSIK
(2023)
Article
Chemistry, Multidisciplinary
Luyao Wang, Zijie Gao, Zhenlin Hou, Jinmei Song, Xiaoyu Liu, Yifei Zhang, Xiaodong Wang, Fuhua Yang, Yanpeng Shi
Summary: In this study, an analogue of electromagnetically induced transparency (EIT) was excited in the terahertz range using a periodic unit consisting of a silicon rectangular bar resonator and a silicon ring resonator. Active control of the EIT-like effect was achieved by integrating a monolayer graphene into THz metamaterials, allowing for modulation of electron distribution and transmission. The results have potential applications in slow light devices and ultrafast optical signal processing.
Article
Chemistry, Multidisciplinary
Shuang Liu, Jingxin Dong, Jiangnan Si, Weiji Yang, Xuanyi Yu, Jialin Zhang, Xiaoxu Deng
Summary: This study demonstrates bidirectional electromagnetically induced transparency (EIT) through coupling of magnetic dipole modes on a nanoscale a-Si cuboid-bar metasurface. By breaking the symmetry of the cuboid-bar structure, destructive interference between bright and dark magnetic dipole modes is induced, resulting in the bidirectional EIT phenomenon. The position and amplitude of simulated EIT peak can be adjusted by the vertical and horizontal spacing, providing potential applications in magnetic sensing and nonlinearity.
