Reconfigurable topological photonic crystal

MI Shalaev, S Desnavi, W Walasik… - New Journal of …, 2018 - iopscience.iop.org
Topological insulators are materials that conduct on the surface and insulate in their interior
due to non-trivial topology of the band structure. The edge states on the interface between …

Tunable multichannel Fibonacci one-dimensional terahertz photonic crystal filter

V Sepahvandi, B Rezaei, AH Aly - Scientific Reports, 2023 - nature.com
This paper proposes a multichannel terahertz optical filter based on a one-dimensional
photonic crystal with a third-order Fibonacci structure, including a bulk Dirac semimetal. The …

Tunable topological valley transport in two-dimensional photonic crystals

Y Wang, W Zhang, X Zhang - New Journal of Physics, 2019 - iopscience.iop.org
Recently, exploring the valley degree of freedom in photonic crystals has attracted
considerable attentions since it opens up the possibility of extending valleytronics to optics …

Bound states in the continuum in asymmetric dual-patch metasurfaces

RL Chern, HC Yang, JC Chang - Optics Express, 2023 - opg.optica.org
We investigate the bound states in the continuum (BICs) in dielectric metasurfaces
consisting of asymmetric dual rectangular patches in the unit cell of a square lattice. Various …

Electric field sensor based on photonic crystal cavity with liquid crystal infiltration

Y Zhao, Y Zhang, R Lv, J Li - Journal of Lightwave Technology, 2017 - opg.optica.org
A miniaturized and high-sensitive electric field sensor based on liquid crystal (LC) infiltrated
photonic crystal (PC) cavity is proposed, by combining the excellent resonant properties of …

Tunable Bragg defect mode in one-dimensional photonic crystal containing a graphene-embedded defect layer

H Mahmoodzadeh, B Rezaei - Applied Optics, 2018 - opg.optica.org
Using the transfer matrix method, the transmission properties of defective one-dimensional
photonic crystal are analyzed in the terahertz region. The defect layer is composed of a …

A tunable flat terahertz lens using Dirac semimetals: a simulation study

P Panahianfar, B Rezaei, A Darafsheh - Scientific Reports, 2024 - nature.com
We propose and design a flat and tunable terahertz lens achieved through a two-
dimensional photonic crystal composed of an array of rods made of a Dirac semimetal …

Manipulation of Bragg and graphene photonic band gaps in one-dimensional photonic crystal containing graphene

V Pourmahmoud, B Rezaei - Optik, 2019 - Elsevier
Abstract Using the Kronig-Penney method, we have investigated the photonic band gap
properties of one-dimensional photonic crystal composed of dielectric and multilayer …

Tunable complete photonic band gap in anisotropic photonic crystal slabs with non-circular air holes using liquid crystals

TF Khalkhali, A Bananej - Optics Communications, 2016 - Elsevier
In this study, we analyze the tunability of complete photonic band gap of square and
triangular photonic crystal slabs composed of square and hexagonal air holes in anisotropic …

Voltage controlled scattering from porous silicon Mie-particles in liquid crystals

LM Pappu, RJ Martin-Palma, B Martín-Adrados… - Journal of Molecular …, 2019 - Elsevier
Creating novel liquid crystalline (LC) photonic metamaterial structures is a highly promising
approach for the development of tunable photonic devices particularly when nanoporous …