Results 81 to 90 of about 15,894 (239)

Fast Simulation of Wide‐Angle Coherent Diffractive Imaging

open access: yesLaser &Photonics Reviews, Volume 20, Issue 7, 6 April 2026.
The propagation multi‐slice Fourier transform method is introduced as an accurate and efficient approach for describing light scattering for arbitrarily shaped objects. Its exceptional suitability for simulating coherent diffractive imaging of nanoparticles in the XUV and soft X‐ray range is demonstrated.
Paul Tuemmler   +3 more
wiley   +1 more source

COUPLING COEFFICIENTS OF DIFFERENT SPHERICAL DIELECTRIC MICRORESONATORS

open access: yesInformation and Telecommunication Sciences, 2018
Background. Nowadays, further increase of processing and transmission speed of information is associated with the development of hybrid integrated circuits, combining electrical and optical components.
Alexander Trubin
doaj   +1 more source

Chaos-assisted broadband momentum transformation in optical microresonators [PDF]

open access: yes, 2017
The law of momentum conservation rules out many desired processes in optical microresonators. We report broadband momentum transformations of light in asymmetric whispering gallery microresonators.
Gong, Qihuang   +9 more
core  

Correlated behavior of conductance and phase rigidity in the transition from the weak-coupling to the strong-coupling regime

open access: yes, 2007
We study the transmission through different small systems as a function of the coupling strength $v$ to the two attached leads. The leads are identical with only one propagating mode $\xi^E_C$ in each of them.
A. F. Sadreev   +4 more
core   +1 more source

Topological Photonic Devices and Circuits at Terahertz Frequencies

open access: yesLaser &Photonics Reviews, Volume 20, Issue 7, 6 April 2026.
This review examines how 3D topological insulators and emerging topological photonic phases enable robust, low‐loss and defect‐immune terahertz devices. Fundamental properties, device implementations and topological transport mechanisms are surveyed, revealing new opportunities for reconfigurable, high‐performance THz components and scalable ...
Samane Kalhor   +3 more
wiley   +1 more source

Radiation characteristics of a double‐layer spherical dielectric lens antenna with a conformal PEC disk fed by on‐axis dipoles

open access: yesIET Microwaves, Antennas & Propagation, 2021
The radiation of a double‐layer spherical dielectric lens equipped with a conformal spherical‐disk PEC reflector and excited by elementary sources located on the antenna axis of rotation is considered. The sources are either a radial electric dipole or a
Maria E. Tikhenko   +3 more
doaj   +1 more source

Merging van der Waals Materials and Optical Metasurfaces for Cavity Quantum Electrodynamics

open access: yesNanophotonics, Volume 15, Issue 5, 16 March 2026.
Flat optical metasurfaces supporting quasi‐bound states in the continuum (qBIC) enable cavity‐like, high‐Q resonances in ultrathin nanostructures. This perspective explores the emergence of cavity quantum electrodynamics in qBIC metasurfaces, specifically those made from ultrathin van der Waals nanostructures, where cavities and emitters are seamlessly
Luca Sortino   +2 more
wiley   +1 more source

Rotation-induced Asymmetry of Far-field Emission from Optical Microcavities

open access: yes, 2014
We study rotation-induced asymmetry of far-field emission from optical microcavities, based on which a new scheme of rotation detection may be developed.
Cao, Hui, Ge, Li, Sarma, Raktim
core   +1 more source

Photo‐Reconfigurable Supercoupling Induced Transparency in On‐Chip Topological Edge State Cavities

open access: yesAdvanced Materials, Volume 38, Issue 13, 3 March 2026.
A novel supercoupling induced transparency (SIT) is demonstrated in a valley‐Hall photonic crystal. The valley vortices enable the supercoupling between a leaky and a guided topological edge state cavity even across a distance of 4.3 wavelengths, inducing a transparency window with negligible reflection.
Wenhao Wang, Ranjan Singh
wiley   +1 more source

Germanium microlasers on metallic pedestals

open access: yesAPL Photonics, 2018
Strain engineering is a powerful approach in micro- and optoelectronics to enhance carrier mobility, tune the bandgap of heterostructures, or break lattice symmetry for nonlinear optics.
A. Elbaz   +8 more
doaj   +1 more source

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