Results 21 to 30 of about 32,180 (314)
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, 2021 One-dimensional photonic crystals composed of alternating layers with high- and low-density were fabricated using two-photon polymerization from a single photosensitive polymer for the infrared spectral range. By introducing single high-density layers to
Victoria Paige Stinson +4 more
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Spatial solitons in quadratic 2D nonlinear photonic crystals [PDF]
, 2007 We report on the first investigations into parametric solitary-wave formation in 2D nonlinear photonic crystals and present experimental results obtained in an hexagonally poled LiNbO3 waveguide designed for twin-beam second harmonic generation at ...
Alessia Pasquazi +10 more
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Photonic Crystals - Optical Structures for Advanced Technology
Communications, 2008 This paper presents experimental results in the field of photonic crystals investigation. There are presented our results of experimental investigation of one-dimensional photonic crystals appearing in nature, two-dimensional photonic crystals we formed ...
Daniel Kacik +4 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 ...
Darius Gailevicius +5 more
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The development of infrared stealth technology based on photonic crystals [PDF]
Zhihui kongzhi yu fangzhen, 2023 The dielectric materials with different refractive index are periodically arranged according to a certain structure to form photonic crystals, which can control the photon transmission regularly.
JIN Bin, SUN Haiwen
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Optimization of Photonic Nanocrystals for Invisibility Using Artificial Intelligence [PDF]
Journal of Advanced Materials in EngineeringPhotonic crystals are structures that can control the propagation of light by creating periodic changes in the refractive index. These structures facilitate directing electromagnetic waves in specific directions and making objects invisible by creating a
Z. Dorrani
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Scattering of light in photonic crystals [PDF]
SPIE Proceedings, 2002 A new method is developed to calculate the scattering of light at the surface of a photonic crystal. The problem is solved in terms of virtual surface-current distributions and the calculation takes full advantage of the infinite-space plane-wave expansion method for obtaining the photonic band structure.
Hoenders, BJ, Doosje, M, Knoester, J
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Evaluation of the possibilities of 3D-printing for the making of waveguide photonic crystals
Физика волновых процессов и радиотехнические системы, 2022 The paper considers the possibilities of 3D printing technology for the manufacture of X-band waveguide photonic crystals. The photonic crystals for an EIA WR-90 standard rectangular waveguide with a cross section of 22,86 10,16 mm2 in the X-band were ...
Aleksandr I. Mikhailov +2 more
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FEM modeling of 3D photonic crystals and photonic crystal waveguides [PDF]
SPIE Proceedings, 2005 We present a finite-element simulation tool for calculating light fields in 3D nano-optical devices. This allows to solve challenging problems on a standard personal computer. We present solutions to eigenvalue problems, like Bloch-type eigenvalues in photonic crystals and photonic crystal waveguides, and to scattering problems, like the transmission ...
Burger, S. +4 more
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