Toroidal electromagnetically induced transparency based meta-surfaces and its applications

A Bhattacharya, R Sarkar, G Kumar - Iscience, 2022 - cell.com
The vigorous research on low-loss photonic devices has brought significance to a new kind
of electromagnetic excitation, known as toroidal resonances. Toroidal excitation, possessing …

Polarization-independent tunable terahertz slow light with electromagnetically induced transparency metasurface

KM Devi, A Jana, A Punjal, N Acharyya… - New Journal of …, 2022 - iopscience.iop.org
Tunable slow light systems have gained much interests recently due to their efficient control
of strong light–matter interactions as well as their huge potential for realizing tunable device …

External bias dependent dynamic terahertz propagation through BiFeO3 film

A Jana, S Rane, PR Choudhury… - Nanotechnology, 2022 - iopscience.iop.org
Interactions of terahertz radiations with matter can lead to the realization of functional
devices related to sensing, high-speed communications, non-destructive testing …

Magnetospectroscopy of terahertz surface plasmons in subwavelength perforated superlattice thin-films

S Karmakar, D Kumar, RK Varshney… - Journal of Applied …, 2022 - pubs.aip.org
Surface plasmons, the resonant oscillations of conducting electrons at the interface of
negative and positive permittivity materials, pave the way for enhanced electromagnetic …

Magnetotransport‐Induced Non‐Contact Terahertz Detection of Weak Magnetic Fields in Optically Thin Frequency‐Agile Superlattice Metasurfaces

S Karmakar, N Acharyya, S Rane… - Advanced Optical …, 2023 - Wiley Online Library
Magnetotransport, the magnetic field induced electron transport phenomenon through
metals and semiconductors, has proven to be a useful technique to tailor the properties of …

Broadside-coupling–enabled insulator-to-metal transition in a terahertz metasurface

S Mallick, DR Chowdhury - Europhysics Letters, 2022 - iopscience.iop.org
We theoretically demonstrate stacked-dipole-resonators–based (broadside near-field
coupling configuration) multilayer metasurfaces separated by a vanadium dioxide film to …

Graphene and metal hybridized terahertz metasurfaces toward tunable plasmon-induced transparency effects

IK KN, KM Devi, DR Chowdhury - Current Applied Physics, 2022 - Elsevier
Tunable metasurfaces have attracted much attention recently, owing to their capability of
actively controlling electromagnetic waves. Here, we propose tunable graphene-metal …

Photoinduced dynamic tailoring of near-field coupled terahertz metasurfaces and its effect on Coulomb parameters

D Kumar, M Gupta, YK Srivastava, KM Devi… - Journal of …, 2022 - iopscience.iop.org
In modern-day photonic integrated circuits, near-field Coulomb interaction plays an
important role in device performance. In fact, harvesting the Coulomb effect intelligently can …

Temperature tunable electromagnetically induced transparency in terahertz metasurface fabricated on ferroelectric platform

KM Devi, A Jana, S Rane, PR Choudhury… - Journal of Physics D …, 2022 - iopscience.iop.org
The integration of active materials in terahertz (THz) metasurfaces is pivotal for the
realization of functional device applications in diverse fields like sensing, imaging …

Ultrasensitive terahertz sensing with broadside coupled polarization insensitive graphene metamaterial cavities

S Kaur, S Karmakar, KM Devi, RK Varshney… - Optik, 2021 - Elsevier
The ubiquitous property of metamaterials to confine energy at deep-subwavelength scale
paves the way to leverage strong light (or terahertz)-matter interactions towards the …