Results 21 to 30 of about 140,562 (225)

Continuous-wave whispering-gallery optical parametric oscillator based on CdSiP2

open access: goldOptics Express, 2018
Continuous-wave (cw) optical parametric oscillators (OPOs) are ideally suited for applications, for example high-resolution spectroscopy, that need coherent sources combining narrow-linewidth emission with good wavelength tunability. Here, we demonstrate for the first time cw OPOs based on a millimeter-sized whispering gallery resonator (WGR) made of ...
Yuechen Jia   +5 more
openalex   +5 more sources

Trapping a single atom in the evanescent field of a WGM-resonator [PDF]

open access: yesEPJ Web of Conferences, 2022
We demonstrate the trapping of single atoms in the evanescent field of a whispering-gallery-mode (WGM) resonator with a standing wave optical dipole trap. We present our progress towards an improved trap loading scheme.
Maron Gabriele   +7 more
doaj   +1 more source

Investigation and Analysis of Acoustojets by Spectral Element Method

open access: yesMathematics, 2022
In this study, acoustic wave scattering in a homogeneous media by an obstacle is examined in the case of plane wave excitation and the formation of acoustic jets is explored.
Ibrahim Mahariq   +5 more
doaj   +1 more source

In-Vivo and Ex-Vivo Measurements of Blood Glucose Using Whispering Gallery Modes

open access: yesSensors, 2020
The permittivity of blood glucose is not a strong function of its concentration in microwave or millimeter-wave frequencies. Measuring glucose concentrations remains a challenge, particularly in the presence of interference caused by the ambient leaky ...
Louis W. Y. Liu   +8 more
doaj   +1 more source

POSSIBILITY FOR FREQUENCY STABILIZATION OF MILLIMETER WAVELENGTH SOLID-STATE SOURCE BY A SCREENED DIELECTRIC RESONATOR [PDF]

open access: yesRadio Physics and Radio Astronomy, 2016
Purpose: Showing the possibility in principle of the use of a screened dielectric resonator excited by the planar waveguide to stabilize the frequency of solid-state sources in the millimeter wavelength range.
A. E. Kogut   +4 more
doaj   +1 more source

Vortex Laser Based on a Plasmonic Ring Cavity

open access: yesCrystals, 2021
The orbital angular momentum (OAM) of the structure light is viewed as a candidate for enhancing the capacity of information processing. Microring has advantages in realizing the compact lasers required for on-chip applications. However, as the clockwise
Xingyuan Wang, Xiaoyong Hu, Tianrui Zhai
doaj   +1 more source

OMNIDIRECTIONAL MILLIMETER-WAVELENGTH ANTENNAS BASED ON SEGMENTAL DIELECTRIC RESONATORS WHICH SUPPORT WHISPERING GALLERY MODES [PDF]

open access: yesRadio Physics and Radio Astronomy, 2023
Subject and Purpose. The subject of investigation is a new class of resonant-type transmit antennas intended for operation at millimeter wavelengths.
A. E. Kogut   +7 more
doaj   +1 more source

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

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