Klein tunneling and supercollimation of pseudospin-1 electromagnetic waves

A Fang, ZQ Zhang, SG Louie, CT Chan - Physical Review B, 2016 - APS
Pseudospin plays a central role in many novel physical properties of graphene and other
artificial systems which have pseudospins of 1/2. Here we show that in certain photonic …

[HTML][HTML] The role of Rayleigh-Wood anomalies and surface plasmons in optical enhancement for nano-gratings

AA Darweesh, SJ Bauman, DT Debu, JB Herzog - Nanomaterials, 2018 - mdpi.com
We propose and report on the design of a 1-D metallo-dielectric nano-grating on a GaAs
substrate. We numerically study the impact of grating period, slit and wire widths, and …

Reconfigurable all-dielectric Fano metasurfaces for strong full-space intensity modulation of visible light

SJ Kim, I Kim, S Choi, H Yoon, C Kim, Y Lee… - Nanoscale …, 2020 - pubs.rsc.org
Dynamically reconfigurable nanoscale tuning of visible light properties is one of the ultimate
goals both in the academic field of nanophotonics and the optics industry demanding …

Polarization-independent, narrowband, near-IR spectral filters via guided mode resonances in ultrathin a-Si nanopillar arrays

RC Ng, JC Garcia, JR Greer, KT Fountaine - ACS Photonics, 2019 - ACS Publications
We report the optical properties obtained through experiments, simulation, and theory of
ultrathin (< 0.1 λ), amorphous Si nanopillar arrays embedded in a thin film of SiO2 designed …

[HTML][HTML] Design and optimization of all-dielectric fluorescence enhancing metasurfaces: Towards advanced metasurface-assisted optrodes

H Alhalaby, M Principe, H Zaraket, P Vaiano, A Aliberti… - Biosensors, 2022 - mdpi.com
The need for miniaturized biological sensors which can be easily integrated into medical
needles and catheters for in vivo liquid biopsies with ever-increasing performances has …

Theory and design of two-dimensional high-contrast-grating phased arrays

P Qiao, L Zhu, WC Chew, CJ Chang-Hasnain - Optics express, 2015 - opg.optica.org
Optical properties of two-dimensional (2D) high-contrast gratings are investigated. We
analyze the mechanisms for high-contrast gratings to function as various high-performance …

Giant distributed optical-field enhancements from Mie-resonant lattice surface modes in dielectric metasurfaces

X Wang, LC Kogos, R Paiella - OSA Continuum, 2018 - opg.optica.org
High-index dielectric nanoparticles can support strong localized Mie scattering resonances
of both electric-and magnetic-dipole character. Compared to the plasmonic excitations of …

Diffraction grating with varying slit width: Quasi-periodic homogenization and its numerical implementation

K Pham, N Lebbe, A Maurel - Journal of Computational Physics, 2023 - Elsevier
We study the diffraction of acoustic waves by thin grating with varying slit width. Using quasi-
periodic homogenization, we derive an effective model in which the grating is replaced by …

Metal-dielectric optical resonance in metasurfaces and SERS effect

AK Sarychev, IV Bykov, IA Boginskaya… - Optical and Quantum …, 2020 - Springer
Anomalous optical response of the metasurface, fabricated from regular silicon resonators is
investigated. The resonators have form of two-dimensional regular bars that are covered by …

On the evaluation of quasi-periodic Green functions and wave-scattering at and around Rayleigh-Wood anomalies

OP Bruno, AG Fernandez-Lado - Journal of Computational Physics, 2020 - Elsevier
This article presents full-spectrum, well-conditioned, Green-function methodologies for
evaluation of scattering by general periodic structures, which remains applicable on a set of …