Results 21 to 30 of about 1,361 (200)

A resonance system of an optoelectronic oscillator based on a transmission-type planar optical disk microcavity [PDF]

open access: yesКомпьютерная оптика, 2018
It is noted that the best technical characteristics of optoelectronic microwave self-oscillators (OESO) are reached in schemes employing high-Q optical microresonators (OMR) working in the traveling wave modes (TWM).
Anatoly Zadorin, Anna Lukina
doaj   +1 more source

A low temperature study of electromagnetic energy loss in low-loss materials in the 110…140 MHz frequency range [PDF]

open access: yesРадиофизика и электроника, 2020
Subject and Purpose. The subject of the study is spectral and energy characteristics of whispering-gallery disk resonators made up of low-loss microwave dielectric and semiconductor materials, namely, gold-doped silicon Si:Au, Chemical Vapor Deposition ...
V.N. Derkach   +5 more
doaj   +1 more source

Nonlinear Optics in Microspherical Resonators

open access: yesMicromachines, 2020
Nonlinear frequency generation requires high intensity density which is usually achieved with pulsed laser sources, anomalous dispersion, high nonlinear coefficients or long interaction lengths.
Gabriele Frigenti   +3 more
doaj   +1 more source

Scattering of e Polarized Whispering-Gallery mode from Concave Boundary

open access: yesRevista de Matemática: Teoría y Aplicaciones, 2012
In this work we present numerical results for the 2D problem of scattering E polarised whispering-gallery mode from concave convex perfectly conducting boundary.
Alexander P. Anyutin, V.I. Stasevich
doaj   +1 more source

Kerr-Raman Optical Frequency Combs in Silica Microsphere Pumped Near Zero Dispersion Wavelength

open access: yesIEEE Access, 2021
Optical frequency combs generated in whispering gallery mode microresonators are in high demand for basic science and a large number of applications including telecommunication systems and quantum optics.
Elena A. Anashkina, Alexey V. Andrianov
doaj   +1 more source

Unusual Polarization Relation between Single-Mode Lasing Emission and Excitation Laser from an Evanescent-Wave Pumped Micro-Cavity Laser

open access: yesPhotonics, 2021
Using a fiber of that is 125 μm in diameter in rhodamine 6G ethanol solution, controllable multi- and single-whispering-gallery-mode (WGM) optofluidic lasers based on evanescent-wave-coupled gain are both available.
Yuchen Wang   +4 more
doaj   +1 more source

HIGH-Q SHIELDED DIELECTRIC DISK RESONATOR WITH WHISPERING GALLERY MODES

open access: yesRadio Physics and Radio Astronomy, 2017
Purpose: Investigation of a shielded disk dielectric resonator (DR) having a high Q-factor and improved spectral characteristics. Design/methodology/approach: The experimental study of energy characteristics of the investigated shielded resonator was ...
A. E. Kogut   +6 more
doaj   +1 more source

Silicon Micromachining for High Performance Passive Structures at W Band

open access: yesActive and Passive Electronic Components, 2002
This paper presents a micromachined technology allowing the realization of very high aspect ratio millimeter-wave circuits. Appropriate 3D electromagnetic simulations based on the finite element method have been implemented to design the circuits ...
B. Guillon   +8 more
doaj   +1 more source

Ultra-high Q terahertz whispering-gallery modes in a silicon resonator

open access: yesAPL Photonics, 2018
We report on the first experimental demonstration of terahertz (THz) whispering-gallery modes (WGMs) with an ultra-high quality factor of 1.5 × 104 at 0.62 THz. The WGMs are observed in a high resistivity float zone silicon spherical resonator coupled to
Dominik Walter Vogt, Rainer Leonhardt
doaj   +1 more source

Plane wave scattering from thin dielectric disk in free space: Generalized boundary conditions, regularizing Galerkin technique and whispering gallery mode resonances

open access: yesIET Microwaves, Antennas & Propagation, 2021
Considered is the plane‐wave scattering from and absorption by a thin circular dielectric disk. The analysis uses a set of the singular integral equations for the effective electric and magnetic currents, derived using the generalized boundary conditions
Mario Lucido   +2 more
doaj   +1 more source

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