Results 11 to 20 of about 137,373 (293)
Spatiotemporal Photonic Crystals
Conference 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
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Efficient excitation of self-collimated beams and single Bloch modes in planar photonic crystals [PDF]
, 2003 Using finite-difference time-domain calculations, we investigate out-of-plane coupling between a square-lattice planar photonic crystal and a conventional waveguide located above the photonic crystal.
Scherer, Axel, Witzens, Jeremy
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Function photonic crystals [PDF]
Physica 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
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Scientific 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
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Optics Express, 2010 9 pages, 6 figures; discussion of light extraction and more experimental details ...
Pervez, Nadia K. +5 more
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Simulation of Amorphous Silicon Carbide Photonic Crystal Absorption Layer for Solar Cells
Crystals, 2022 In this work, the amorphous silicon carbide (a-SiC) with low cost and high extinction coefficient was used as the light absorption layer of solar cells, and the photonic crystal (PC) structure and defect structure were introduced.
Lin Zhou +4 more
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Photonic Crystal Laser Accelerator Structures [PDF]
, 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
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Photonic crystal microchip laser [PDF]
SPIE 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
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Fabrication of 3D photonic band gap crystals for controlling the emission of light [PDF]
EPJ Web of Conferences3D 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
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Progress in molecular imprinted photonic crystals
Cailiao 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
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