Results 21 to 30 of about 2,694,501 (323)
Amplified emission and lasing in photonic time crystals [PDF]
Science, 2022 Photonic time crystals (PTCs), materials with a dielectric permittivity that is modulated periodically in time, offer new concepts in light manipulation.
M. Lyubarov +5 more
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Metasurface-based realization of photonic time crystals [PDF]
Science Advances, 2022 Photonic time crystals are artificial materials whose electromagnetic properties are uniform in space but periodically vary in time. The synthesis of these materials and experimental observation of their physics remain very challenging because of the ...
Xu-chen Wang +5 more
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Flat Bands in Magic-Angle Bilayer Photonic Crystals at Small Twists.
Physical Review Letters, 2021 The new physics of magic-angle twisted bilayer graphene (TBG) motivated extensive studies of flat bands hosted by moiré superlattices in van der Waals structures, inspiring the investigations into their photonic counterparts with potential applications ...
Kaichen Dong +9 more
semanticscholar +1 more source
Inverse design of photonic crystals through automatic differentiation [PDF]
ACS Photonics, 2020 Gradient-based inverse design in photonics has already achieved remarkable results in designing small-footprint, high-performance optical devices. The adjoint variable method, which allows for the efficient computation of gradients, has played a major ...
M. Minkov +7 more
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Topological Insulator Laser Using Valley-Hall Photonic Crystals [PDF]
, 2020 Topological photonics has recently been proved a robust framework for manipulating light. Active topological photonic systems, in particular, enable richer fundamental physics by employing nonlinear light-matter interactions, thereby opening a new ...
Y. Gong +4 more
semanticscholar +1 more source
Study of laser actions by bird’s feathers with photonic crystals
Scientific Reports, 2021 Random lasers had been made by some biomaterials as light scattering materials, but natural photonic crystals have been rarely reported as scattering materials.
Shih-Wen Chen +6 more
doaj +1 more source
Photonic Band Gaps and Resonance Modes in 2D Twisted Moiré Photonic Crystal
Photonics, 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
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Research and Application Progress of Inverse Opal Photonic Crystals in Photocatalysis
Inorganics, 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
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Inorganic scintillator surface enhancements with 2-D photonic crystals to improve light collection [PDF]
EPJ Web of Conferences, 2023 Inorganic scintillators are widely used in various applications of gamma spectroscopy such as nuclear nonproliferation and safeguards, medical applications, space applications, and astronomy.
Surani Stuti +4 more
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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
openaire +1 more source