Results 31 to 40 of about 64,657 (295)

Photonic band gaps analysis of Thue-Morse multilayers made of porous silicon [PDF]

open access: yes, 2006
Dielectric aperiodic Thue-Morse structures up to 128 layers have been fabricated by using porous silicon technology. The photonic band gap properties of Thue-Morse multilayers have been theoretically investigated by means of the transfer matrix method ...
A. MARINO   +6 more
core   +2 more sources

MODELING OF MULTILAYER ULTRATHIN-FILM PHOTONIC CRYSTALS FOR SELECTIVE FILTERS

open access: yesДоклады Белорусского государственного университета информатики и радиоэлектроники, 2019
The aim of the work was to study the optical properties of the one-dimensional photonic crystals from ultrathin alternating layers of titanium and silicon oxides with different order of alternating layers to form defective half-wave layers in the bulk of
L. S. Khoroshko   +2 more
doaj   +1 more source

Fabrication of photonic band-gap crystals [PDF]

open access: yes, 1995
We describe the fabrication of three-dimensional photonic crystals using a reproducible and reliable procedure consisting of electron beam lithography followed by a sequence of dry etching steps.
Cheng, C. C., Scherer, A.
core   +1 more source

Angular photonic band gap

open access: yesPhysical Review A, 2011
We present detailed numerical simulations of a class of material systems that strongly discriminate light based primarily on the angle of incidence, over a broad range of frequencies, and independent of the polarization. Unique properties of these systems emerge from exploring photonic crystals whose constituents have an anisotropic dielectric response.
Hamam, Rafif E.   +2 more
openaire   +3 more sources

Electroless plated maghemite for three-dimensional magneto photonic crystals

open access: yesAIP Advances, 2017
Three-dimensional magneto photonic crystals (3D-MPCs) are promising material for manipulating light in 3D space. In this study, we fabricated 3D-MPC that is filling the air-gap of opal photonic crystal with magnetic material by electroless plating.
Shinichiro Mito   +5 more
doaj   +1 more source

Designing Photonic Topological Insulators with Quantum-Spin-Hall Edge States using Topology Optimization [PDF]

open access: yes, 2019
Designing photonic topological insulators is highly non-trivial because it requires inversion of band symmetries around the band gap, which was so far done using intuition combined with meticulous trial and error.
Christiansen, Rasmus E.   +3 more
core   +2 more sources

One-dimensional ZnSe/ZnS/BK7 ternary planar photonic crystals as wide angle infrared reflectors

open access: yesResults in Physics, 2021
In this work, we propose novel structures of one-dimensional ternary planar photonic crystals (1D-TPPC) consisting of periodic unit cells of dispersive materials.
Khedr M. Abohassan   +2 more
doaj   +1 more source

Ultraviolet photonic crystal laser [PDF]

open access: yes, 2004
We fabricated two dimensional photonic crystal structures in zinc oxide films with focused ion beam etching. Lasing is realized in the near ultraviolet frequency at room temperature under optical pumping.
Cao, H.   +6 more
core   +3 more sources

Band Structure of Photonic Crystals Fabricated by Two-Photon Polymerization

open access: yesCrystals, 2015
We study theoretically the band-gap structures of several types of three-dimensional photonic crystals with the fcc lattice symmetry: synthetic opals, inverted yablonovite and woodpile.
Mikhail V. Rybin   +7 more
doaj   +1 more source

The Structural Design of a Complete Band Gap using Non-Uniform Photonic Crystals with Low Index Material

open access: yesMajlesi Journal of Electrical Engineering, 2023
This study presents a photonic bandgap formation in a non-uniform 2D photonic crystal structure with low index rods relative to the air background. In order to find an absolute photonic band gap formation, photonic lattices of two non-uniform square and ...
Seyed Mohammad Zare   +3 more
doaj   +1 more source

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