Observation of electromagnetically induced transparency and absorption in Yttrium Iron Garnet loaded split ring resonator

2018 ◽  
Vol 451 ◽  
pp. 235-242 ◽  
Author(s):  
Z.J. Tay ◽  
W.T. Soh ◽  
C.K. Ong
Keyword(s):  
Yttrium Iron Garnet ◽  
Ring Resonator ◽  
Electromagnetically Induced Transparency ◽  
Split Ring Resonator ◽  
Yttrium Iron ◽  
Split Ring ◽  
Iron Garnet ◽  
Induced Transparency

scholarly journals Reconfigurable Terahertz Metamaterial Using Split-Ring Meta-Atoms with Multifunctional Electromagnetic Characteristics

2020 ◽  
Vol 10 (15) ◽  
pp. 5267 ◽  
Author(s):  
Yuhang Liao ◽  
Yu-Sheng Lin
Keyword(s):  
Tuning Range ◽  
Ring Resonator ◽  
Transverse Electric ◽  
Electromagnetically Induced Transparency ◽  
Split Ring Resonator ◽  
Transverse Magnetic ◽  
Split Ring ◽  
Electromagnetic Characteristics ◽  
Switching Characteristics ◽  
Induced Transparency

We propose a reconfigurable terahertz (THz) metamaterial (RTM) to investigate its multifunctional electromagnetic characteristics by moving the meta-atoms of split-ring resonator (SRR) array. It shows the preferable and capable adjustability in the THz frequency range. The electromagnetic characteristics of the proposed RTM device are compared and analyzed by moving the meta-atoms in different polarized transverse magnetic (TM) and transverse electric (TE) modes. The symmetrical meta-atoms of RTM device exhibit a resonant tuning range of several tens of GHz and the asymmetrical meta-atoms of RTM device exhibit the better tunability. Therefore, an RTM device with reconfigurable meta-atoms possesses the resonance shifting, polarization switching, electromagnetically induced transparency (EIT) switching and multiband to single-band switching characteristics. This proposed RTM device provides the potential possibilities for the use of THz-wave optoelectronics with tunable resonance, EIT analog and tunable multiresonance characteristics.

Electromagnetically induced transparency in nano-structures made from metallic nanorod and split-ring-resonator

2015 ◽  
Vol 355 ◽  
pp. 337-341 ◽  
Author(s):  
Chuanqi Li ◽  
Lei Huang ◽  
Wenyan Wang ◽  
Xiangjun Ma ◽  
Shengbang Zhou ◽  
...  
Keyword(s):  
Ring Resonator ◽  
Electromagnetically Induced Transparency ◽  
Split Ring Resonator ◽  
Split Ring ◽  
Nano Structures ◽  
Induced Transparency

A novel reconfigurable electromagnetically induced transparency based on S-PINs

2018 ◽  
Vol 32 (04) ◽  
pp. 1850030 ◽  
Author(s):  
Feng Xue ◽  
Shao-Bin Liu ◽  
Hai-Feng Zhang ◽  
Yong-Diao Wen ◽  
Xiang-Kun Kong ◽  
...  
Keyword(s):  
Slow Light ◽  
Ring Resonator ◽  
Electromagnetically Induced Transparency ◽  
Split Ring Resonator ◽  
Destructive Interference ◽  
Split Ring ◽  
Simple Method ◽  
Strong Phase ◽  
Phase Dispersion ◽  
Induced Transparency

In this paper, a tunable electromagnetically induced transparency (EIT) based on S-PINs is theoretically analyzed. Unit cell of the structure consists of a cutwire (CW), split ring resonator (SRR), and solid state plasma (SS plasma) patches which are composed of S-PIN array. The destructive interference between the CW and SRR results in a narrowband transparency window accompanied with strong phase dispersion. The proposed design can obtain a tunable EIT with different frequencies range from 12.8 GHz to 16.5 GHz in a simple method by switching these S-PINs on or off selectively. The related parameters of the S-PIN such as the size, carrier concentration, and volt-ampere characteristics have been studied theoretically. The interaction and coupling between two resonators are investigated in detail by the analysis of the current distribution and E-field strength as well. The research results provide an effective way to realize reconfigurable compact slow-light devices.

scholarly journals Demonstration of Dipole-Induced Transparency Using Mirrored Split-Ring Resonator Metasurface For Microwave Applications

2022 ◽  
Author(s):  
Sarin VP ◽  
Rohith K. Raj ◽  
Vasudevan K
Keyword(s):  
Electric Dipole ◽  
Ring Resonator ◽  
Dipole Moments ◽  
Single Layer ◽  
Split Ring Resonator ◽  
Transparency Window ◽  
Destructive Interference ◽  
Split Ring ◽  
Electric Dipole Moments ◽  
Induced Transparency

Abstract In this paper, dipole-induced transparency in the microwave regime is proposed and verified using experimental and simulation studies. A single layer mirrored Split-Ring Resonator (SRR) metasurface array working under the H⊥excitation scenario is used to achieveout-of-phase electric dipole moments on the metasurface for a normal incident plane wave. The emergence of the transparency window is accompanied by the destructive interference between out-of-phase oscillating electric dipole moments on the metasurfaceand is verified in computations by studying the radar Cross Section in full-wave electromagnetic simulations.We used the multipole scattering theory to validate the results computationally. The coupling effects are studied numerically, and the emergence of the transparency window is studied experimentally using transmission measurements inside an anechoic chamber using a vector network analyzer.

Analysis and lattice imaging of a transitional event on garnets

1978 ◽  
Vol 36 (1) ◽  
pp. 270-271
Author(s):  
J.Y. Laval
Keyword(s):  
Yttrium Iron Garnet ◽  
Reciprocal Lattice ◽  
Transitional Zone ◽  
Lattice Imaging ◽  
Yttrium Iron ◽  
X Ray ◽  
Ionic Process ◽  
The Matrix ◽  
High Resolution Technique ◽  
Iron Garnet

The exsolution of magnetite from a substituted Yttrium Iron Garnet, containing an iron excess may lead to a transitional event. This event is characterized hy the formation of a transitional zone at the center of which the magnetite nucleates (Fig.1). Since there is a contrast between the matrix and these zones and since selected area diffraction does not show any difference between those zones and the matrix in the reciprocal lattice, it is of interest to analyze the structure of the transitional zones.By using simultaneously different techniques in electron microscopy, (oscillating crystal method microdiffraction and X-ray microanalysis)one may resolve the ionic process corresponding to the transitional event and image this event subsequently by high resolution technique.

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