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Tutorial: Computing Topological Invariants in 2D Photonic Crystals [PDF]

open access: yesAdvanced Quantum Technologies, 2019
The field of topological photonics emerged as one of the most promising areas for applications in transformative technologies: possible applications are in topological lasers or quantum optics interfaces.
María Blanco de Paz   +7 more
semanticscholar   +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

Photonic Crystals with a Defect Fabricated by Two-Photon Polymerization for the Infrared Spectral Range

open access: yesOptics, 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
doaj   +1 more source

Visualization of Higher-Order Topological Insulating Phases in Two-Dimensional Dielectric Photonic Crystals. [PDF]

open access: yesPhysical Review Letters, 2018
The studies of topological phases of matter have been developed from condensed matter physics to photonic systems, resulting in fascinating designs of robust photonic devices.
Biye Xie   +8 more
semanticscholar   +1 more source

The development of infrared stealth technology based on photonic crystals [PDF]

open access: yesZhihui 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
doaj   +1 more source

Annular photonic crystals

open access: yesOptics Express, 2005
A new type of two-dimensional photonic-crystal (PC) structure called annular PC composed of a dielectric-rod and a circular-air-hole array in a square or triangular lattice such that a dielectric rod is centered within each air hole is studied. The dielectric rods within the air holes greatly modify the dispersion diagram of the photonic crystal ...
Hamza, Kurt, D S, Citrin
openaire   +2 more sources

Photonic Crystals - Optical Structures for Advanced Technology

open access: yesCommunications, 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
doaj   +1 more source

Topologically protected refraction of robust kink states in valley photonic crystals [PDF]

open access: yesNature Physics, 2017
A photonic crystal can realize an analogue of a valley Hall insulator, promising more flexibility than in condensed-matter systems to explore these exotic topological states.
Fei Gao   +8 more
semanticscholar   +1 more source

Evaluation of the possibilities of 3D-printing for the making of waveguide photonic crystals

open access: yesФизика 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
doaj   +1 more source

Direct observation of topological edge states in silicon photonic crystals: Spin, dispersion, and chiral routing [PDF]

open access: yesScience Advances, 2018
We directly observe the spin, dispersion, and guiding of topological states in photonic crystals. Topological protection in photonics offers new prospects for guiding and manipulating classical and quantum information.
N. Parappurath   +3 more
semanticscholar   +1 more source

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