scholarly journals Experimental study of EIT-Like phenomenon in a metamaterial plasma waveguide

2012 ◽  
Vol 1 (3) ◽  
pp. 61
Author(s):  
W. Wang ◽  
L. Zhang ◽  
K. Fang ◽  
Y. W. Zhang
Keyword(s):  
Transmission Lines ◽  
Electromagnetically Induced Transparency ◽  
Resonance Wavelength ◽  
Plasma Waveguide ◽  
Destructive Interference ◽  
Microwave Frequencies ◽  
Resonance Modes ◽  
Single Side ◽  
Fabry Perot ◽  
Induced Transparency

This paper demonstrates the realization of the electromagnetically induced transparency (EIT)-like transmission in a metamaterial plasma waveguide with double side defects based on transmission lines. The waveguide with a single side defect works as a plasma resonator and the resonance wavelength is determined by the Fabry-Perot resonance of surface plasma. While in a waveguide with double side defects, a transmission peak appears between the two resonators frequencies because of the destructive interference between the resonance modes of the two resonators, which indicates a pronounced EIT phenomenon. The experiment results agree well with simulations in microwave frequencies.

Plasmonic analog of electromagnetically-induced transparency of asymmetrical slots waveguide

2016 ◽  
Vol 30 (05) ◽  
pp. 1650045 ◽  
Author(s):  
Lin Sun ◽  
Jicheng Wang ◽  
Zheng-Da Hu ◽  
Xiaosai Wang ◽  
Jing Chen
Keyword(s):  
Electromagnetically Induced Transparency ◽  
Optical Switch ◽  
Optical Computing ◽  
Geometrical Parameters ◽  
Plasmonic Waveguides ◽  
Metal Insulator Metal ◽  
Fabry Perot ◽  
Line Theory ◽  
Formation And Evolution ◽  
Induced Transparency

In this paper, electromagnetically-induced transparency (EIT) phenomena have been investigated numerically in the plasmonic waveguides composed of unsymmetrical slot shaped metal–insulator–metal (MIM) structures. By the transmission line theory and Fabry–Perot model, the formation and evolution mechanisms of plasmon-induced transparency were exactly analyzed. The analysis showed that the peak of EIT-like transmission could be changed easily according to certain rules by adjusting the geometrical parameters of the slot structures, including the coupling distances and slot depths. We can find a new method to design nanoscale optical switch, devices in optical storage and optical computing.

scholarly journals Optomechanically Induced Transparency

Science ◽  
2010 ◽  
Vol 330 (6010) ◽  
pp. 1520-1523 ◽  
Author(s):  
Stefan Weis ◽  
Rémi Rivière ◽  
Samuel Deléglise ◽  
Emanuel Gavartin ◽  
Olivier Arcizet ◽  
...  
Keyword(s):  
Quantum Interference ◽  
Electromagnetically Induced Transparency ◽  
Destructive Interference ◽  
Probe Field ◽  
Optomechanical System ◽  
Light Pulses ◽  
Quantum Interference Effect ◽  
On Chip ◽  
Induced Transparency ◽  
Optomechanically Induced Transparency

Electromagnetically induced transparency is a quantum interference effect observed in atoms and molecules, in which the optical response of an atomic medium is controlled by an electromagnetic field. We demonstrated a form of induced transparency enabled by radiation-pressure coupling of an optical and a mechanical mode. A control optical beam tuned to a sideband transition of a micro-optomechanical system leads to destructive interference for the excitation of an intracavity probe field, inducing a tunable transparency window for the probe beam. Optomechanically induced transparency may be used for slowing and on-chip storage of light pulses via microfabricated optomechanical arrays.

scholarly journals Nanoscale Plasmonic Devices Based on Metal-Dielectric-Metal Stub Resonators

2012 ◽  
Vol 2012 ◽  
pp. 1-13 ◽  
Author(s):  
Yin Huang ◽  
Changjun Min ◽  
Liu Yang ◽  
Georgios Veronis
Keyword(s):  
Transmission Lines ◽  
Slow Light ◽  
Electromagnetically Induced Transparency ◽  
Active Material ◽  
Plasmonic Waveguide ◽  
Plasmonic Waveguides ◽  
Periodic Arrays ◽  
Research Activities ◽  
Induced Transparency

We review some of the recent research activities on plasmonic devices based on metal-dielectric-metal (MDM) stub resonators for manipulating light at the nanoscale. We first introduce slow-light subwavelength plasmonic waveguides based on plasmonic analogues of periodically loaded transmission lines and electromagnetically induced transparency. In both cases, the structures consist of a MDM waveguide side-coupled to periodic arrays of MDM stub resonators. We then introduce absorption switches consisting of a MDM plasmonic waveguide side-coupled to a MDM stub resonator filled with an active material.

scholarly journals Switchable Electromagnetically Induced Transparency with Toroidal Mode in a Graphene-Loaded All-Dielectric Metasurface

Nanomaterials ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 1064 ◽  
Author(s):  
Guanghou Sun ◽  
Sheng Peng ◽  
Xuejin Zhang ◽  
Yongyuan Zhu
Keyword(s):  
Electromagnetically Induced Transparency ◽  
Modulation Depth ◽  
Optical Filters ◽  
Destructive Interference ◽  
Quality Factors ◽  
High Q ◽  
Dipole Resonance ◽  
Q Factors ◽  
Induced Transparency ◽  
Dielectric Metasurface

Active photonics based on graphene has attracted wide attention for developing tunable and compact optical devices with excellent performances. In this paper, the dynamic manipulation of electromagnetically induced transparency (EIT) with high quality factors (Q-factors) is realized in the optical telecommunication range via the graphene-loaded all-dielectric metasurface. The all-dielectric metasurface is composed of split Si nanocuboids, and high Q-factor EIT resonance stems from the destructive interference between the toroidal dipole resonance and the magnetic dipole resonance. As graphene is integrated on the all-dielectric metasurface, the modulation of the EIT window is realized by tuning the Fermi level of graphene, engendering an appreciable modulation depth of 88%. Moreover, the group velocity can be tuned from c/1120 to c/3390. Our proposed metasurface has the potential for optical filters, modulators, and switches.

scholarly journals Bidirectional Electromagnetically Induced Transparency Based on Coupling of Magnetic Dipole Modes in Amorphous Silicon Metasurface

Nanomaterials ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1550
Author(s):  
Shuang Liu ◽  
Jingxin Dong ◽  
Jiangnan Si ◽  
Weiji Yang ◽  
Xuanyi Yu ◽  
...  
Keyword(s):  
Magnetic Dipole ◽  
Electromagnetically Induced Transparency ◽  
Chemical Vapor ◽  
Destructive Interference ◽  
Silicon Etching ◽  
Dipole Mode ◽  
Etching Technique ◽  
Dipole Resonance ◽  
Vertical Spacing ◽  
Induced Transparency

A bidirectional electromagnetically induced transparency (EIT) arising from coupling of magnetic dipole modes is demonstrated numerically and experimentally based on nanoscale a-Si cuboid-bar metasurface. Analyzed by the finite-difference time-domain (FDTD) Solutions, both the bright and dark magnetic dipole mode is excited in the cuboid, while only the dark magnetic dipole mode is excited in the bar. By breaking the symmetry of the cuboid-bar structure, the 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 is adjusted by the vertical spacing and horizontal spacing. The EIT metasurface was fabricated by Electron-Beam Lithography and deep silicon etching technique on the a-Si film deposited by Plasma-Enhanced Chemical Vapor Deposition. Measured by a convergent spectrometer, the fabricated sample achieved a bidirectional EIT peak with transmission up to 65% and 63% under forward and backward incidence, respectively. Due to the enhanced magnetic field induced by the magnetic dipole resonance, the fabricated bidirectional EIT metasurface provides a potential way for magnetic sensing and magnetic nonlinearity.

ELECTROMAGNETICALLY INDUCED TRANSPARENCY (EIT)-LIKE TRANSMISSION IN ORTHOGONAL-COUPLED SLOT CAVITIES

2012 ◽  
Vol 27 (02) ◽  
pp. 1350009 ◽  
Author(s):  
YINGHUI GUO ◽  
LIANSHAN YAN ◽  
WEI PAN ◽  
BIN LUO ◽  
KUNHUA WEN ◽  
...  
Keyword(s):  
Near Infrared ◽  
Electromagnetically Induced Transparency ◽  
Fdtd Method ◽  
Infrared Range ◽  
Geometrical Parameters ◽  
Destructive Interference ◽  
Dark Mode ◽  
Horizontal Cavity ◽  
Induced Transparency ◽  
Vertical Cavity

The transmission characteristics and electromagnetic responses of orthogonal-coupled slot cavities system are investigated with finite difference time domain (FDTD) method. Results show the electromagnetically induced transparency (EIT)-like transmission can be realized in the proposed structure due to the destructive interference between the horizontal cavity (bright mode) and the vertical cavity (dark mode). Moreover, trapped resonance modes in the horizontal cavity can be selective whether to be induced in vertical cavity or not depending on their relative position. Consequently, EIT-like transmission can be obtained in visible and near-infrared range, simultaneously or individually. The corresponding physical mechanisms are discussed in terms of counter profiles of fields | Hz | and coupled mode theory. Influences of the geometrical parameters on EIT-like transmission are also investigated to generate transparency windows with different shape.

scholarly journals Erratum: Demonstration of resonant phenomena analogous to Autler-Townes splitting, electromagnetically induced transparency and Fano resonances in a deformed waveguide resonator

2021 ◽  
Vol 45 (1) ◽  
pp. 45-47
Author(s):  
A.V. Dyshlyuk
Keyword(s):  
Electromagnetically Induced Transparency ◽  
Transmission Spectra ◽  
Fano Resonances ◽  
Transmitted Power ◽  
Waveguide Resonator ◽  
Reflection And Transmission ◽  
Input And Output ◽  
Fabry Perot ◽  
Before And After ◽  
Induced Transparency

In this erratum to the original paper [1] we correct an error in the calculation of the reflection and transmission spectra of the bent waveguide-based Fabry-Perot resonator. The error resulted from the neglect of cladding modes in the straight input and output sections before and after the resonator under study (Fig. 2a in the original paper). Although these modes do not contribute directly to the calculated reflected and transmitted power carried by the fundamental modes in the input and output sections, they must be taken into account for the correct computation of the reflection and transmission spectra of the resonator as was found out after the original paper had been published. In this erratum we provide the amended results as well as some corrections to the conclusions of the original paper.

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