Results 41 to 50 of about 63,853 (195)

Three-dimensional macroporous silicon photonic crystal with large photonic band gap [PDF]

open access: yes, 2005
Three-dimensional photonic crystals based on macroporous silicon are fabricated by photoelectrochemical etching and subsequent focused-ion-beam drilling. Reflection measurements show a high reflection in the range of the stopgap and indicate the spectral
Gösele, U.   +5 more
core   +1 more source

Edge states in self-complementary checkerboard photonic crystals: Zak phase, surface impedance and experimental verification

open access: yes, 2017
Edge states of photonic crystals have attracted much attention for the potential applications such as high transmission waveguide bends, spin dependent splitters and one-way photonic circuits. Here, we theoretically discuss and experimentally observe the
Chen, Min   +7 more
core   +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

Photonic Band Gap Materials [PDF]

open access: yes, 1994
An overview of the theoretical and experimental efforts in obtaining a photonic band gap, a frequency band in three-dimensional dielectric structures in which electromagnetic waves are forbidden, is presented.
openaire   +1 more source

Preparation and optical properties of SiO2 photonic crystal structure color films

open access: yesCailiao gongcheng, 2019
In order to study the band gap performance of structural color films under different conditions, Monodisperse submicron silica microspheres with different particle sizes were prepared by the modified Stöber method, and a photonic crystal structure color ...
DU Hong-yan   +6 more
doaj   +1 more source

Photonic Band Gaps and Resonance Modes in 2D Twisted Moiré Photonic Crystal

open access: yesPhotonics, 2021
The study of twisted bilayer 2D materials has revealed many interesting physics properties. A twisted moiré photonic crystal is an optical analog of twisted bilayer 2D materials. The optical properties in twisted photonic crystals have not yet been fully
Khadijah Alnasser   +4 more
doaj   +1 more source

Two-qubit entanglement dynamics for two different non-Markovian environments [PDF]

open access: yes, 2009
We study the time behavior of entanglement between two noninteracting qubits each immersed in its own environment for two different non-Markovian conditions: a high-$Q$ cavity slightly off-resonant with the qubit transition frequency and a nonperfect ...
Breuer H P   +5 more
core   +2 more sources

Photonic-crystal slabs with a triangular lattice of triangular holes investigated using a guided-mode expansion method

open access: yes, 2006
According to a recent proposal [S. Takayama et al., Appl. Phys. Lett. 87, 061107 (2005)], the triangular lattice of triangular air holes may allow to achieve a complete photonic band gap in two-dimensional photonic crystal slabs.
A. Yariv   +9 more
core   +1 more source

Bifurcations and stability of gap solitons in periodic potentials

open access: yes, 2004
We analyze the existence, stability, and internal modes of gap solitons in nonlinear periodic systems described by the nonlinear Schrodinger equation with a sinusoidal potential, such as photonic crystals, waveguide arrays, optically-induced photonic ...
Andrey A. Sukhorukov   +13 more
core   +1 more source

Comprehensive Study of Bulk Thickness and Bending Loss in All-Silicon Terahertz Valley Photonic Crystal Waveguides

open access: yesPhotonics
The investigation of topological structures and phases in photonics has created unprecedented opportunities for developing advanced on-chip terahertz waveguide devices.
Zeyu Zhao, Hao-Zhe Wang, Hang Ren, Su Xu
doaj   +1 more source

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