Results 11 to 20 of about 190,886 (342)

Spatiotemporal Photonic Crystals

open access: yesConference on Lasers and Electro-Optics, 2020
We study photonic systems periodic in both time and space - spatiotemporal photonic crystals, and find that their bandstructure contains both frequency and momentum bandgaps. When the two types of bandgaps coincide, anomalous bandstructure is observed.
Yonatan Sharabi   +4 more
openaire   +1 more source

Function photonic crystals [PDF]

open access: yesPhysica E: Low-dimensional Systems and Nanostructures, 2011
15 pages, 8 figures. arXiv admin note: text overlap with arXiv:1001.3793 by other authors; and text overlap with arXiv:1003.3524, arXiv:physics/0104088 by other authors without ...
Wu, Xiang-Yao   +7 more
openaire   +2 more sources

Continuous-wave operation of electrically pumped, single-mode, edge-emitting photonic crystal Bragg lasers [PDF]

open access: yes, 2007
The authors demonstrate an electrically pumped, single-mode, large-area, edge-emitting InGaAsP/InP two dimensional photonic crystal Bragg laser operating in continuous-wave condition.
DeRose, Guy A.   +4 more
core   +1 more source

Photonic time crystals [PDF]

open access: yesScientific Reports, 2017
AbstractWhen space (time) translation symmetry is spontaneously broken, the space crystal (time crystal) forms; when permittivity and permeability periodically vary with space (time), the photonic crystal (photonic time crystal) forms. We proposed the concept of photonic time crystal and rewritten the Maxwell’s equations.
Zeng, Lunwu   +6 more
openaire   +2 more sources

Photonic Crystal Laser Accelerator Structures [PDF]

open access: yes, 2003
Photonic crystals have great potential for use as laser-driven accelerator structures. A photonic crystal is a dielectric structure arranged in a periodic geometry.
Cowan, Benjamin   +2 more
core   +2 more sources

Photonic crystal spectrometer

open access: yesOptics Express, 2010
9 pages, 6 figures; discussion of light extraction and more experimental details ...
Pervez, Nadia K.   +5 more
openaire   +3 more sources

Research and Application Progress of Inverse Opal Photonic Crystals in Photocatalysis

open access: yesInorganics, 2023
In order to solve the problem of low photocatalytic efficiency in photocatalytic products, researchers proposed a method to use inverse opal photonic crystal structure in photocatalytic materials.
Hongming Xiang   +4 more
doaj   +1 more source

Photonic crystal microchip laser [PDF]

open access: yesSPIE Proceedings, 2016
AbstractThe microchip lasers, being very compact and efficient sources of coherent light, suffer from one serious drawback: low spatial quality of the beam strongly reducing the brightness of emitted radiation. Attempts to improve the beam quality, such as pump-beam guiding, external feedback, either strongly reduce the emission power, or drastically ...
Gailevicius, Darius   +5 more
openaire   +5 more sources

Fabrication of 3D photonic band gap crystals for controlling the emission of light [PDF]

open access: yesEPJ Web of Conferences
3D photonic band gap crystals can be used to manipulate light, for example to increase the emission of an emitter. An inverse woodpile photonic band gap crystal has been fabricated in silicon by FIB lithography and reactive ion etching.
Goodwin Melissa J.   +6 more
doaj   +1 more source

Progress in molecular imprinted photonic crystals

open access: yesCailiao gongcheng, 2020
Photonic crystal is a kind of ordered material which consists of two or more periodic arranged refractive index materials, and the propagation of light can be controlled by changing its average refractive index or lattice spacing.
WANG Xiao-hui   +4 more
doaj   +1 more source

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