Results 11 to 20 of about 19,826 (214)

Evolution of Whispering Gallery Modes in Li-Doped ZnO Hexagonal Micro- and Nanostructures

open access: yesApplied Sciences, 2020
The formation of optical cavities in Li-doped ZnO nanostructures was investigated. By means of the vapor–solid method, long micro- and nanostructures with a hexagonal cross-section were grown.
Rocío Ariza   +4 more
doaj   +1 more source

Optical whispering-gallery mode barcodes for high-precision and wide-range temperature measurements

open access: yesLight: Science & Applications, 2021
Temperature measurement: optical barcodes from whispering-gallery sensors Extremely precise measurement of temperature using devices known as whispering-gallery mode (WGM) sensors can be greatly improved using a technique that simultaneously monitors ...
Jie Liao, Lan Yang
doaj   +1 more source

Analysis of forward Brillouin scattering in optical fibers with whispering-gallery modes [PDF]

open access: yesEPJ Web of Conferences, 2023
A new approach to detect and analyze transverse acoustic mode resonances (TAMRs), responsible for forward Brillouin scattering in optical fibers, is reported using optical whispering gallery modes (WGMs).
Sánchez Luis A.   +3 more
doaj   +1 more source

Trapping photons with optical black hole

open access: yesLight: Science & Applications, 2023
An optical black-hole cavity based on transformation optics enables Q-factor enhancement and strong field confinement, by eliminating the intrinsic radiation loss of the conventional whispering-gallery modes, holding potential for applications in energy ...
You-Ling Chen, Qi-Tao Cao, Yun-Feng Xiao
doaj   +1 more source

Simulations of single-mode laser emission along a waveguide connected to cross-coupled microresonators

open access: yesResults in Optics, 2022
Objective: Single-mode operation is very important for laser emissivity; to exceed the emissivity of a single laser, the phase locking of all lasers in an array can be achieved only when the laser array is coupled and operated in single-mode. Methods: In
Lulu Wang, Zhihong Zhang, Heng Gao
doaj   +1 more source

Atom galleries for whispering atoms: binding atoms in stable orbits around an optical resonator [PDF]

open access: yes, 1994
The external fields of optical whispering gallery modes may be used to confine atoms in stable orbits around a dielectric microsphere. As an example, a toroidal dipole-force trap (atom gallery) for three-level atoms is investigated, and the possibility
Kimble, H. J., Mabuchi, H.
core   +1 more source

Numerical simulation of multi-color laser generation in Tm-doped tellurite microsphere at 1.9, 1.5 and 2.3 microns

open access: yesResults in Physics, 2020
We present the first detailed theoretical analysis of multi-color continuous wave lasing in Tm-doped tellurite spherical microresonators with whispering gallery modes pumped at a wavelength of 792 nm.
E.A. Anashkina   +2 more
doaj   +1 more source

Whispering gallery modes of a triatomic photonic molecule

open access: yesAIP Advances, 2022
In this paper, we present the results of numerical simulations of the optical spectra of a three-sphere photonic molecule. The configuration of the system was continuously modified from linear to triangular, in-plane with the fundamental mode excited in ...
Vladimir Shuvayev   +3 more
doaj   +1 more source

Reconfigurable optical spectra from perturbations on elliptical whispering gallery resonances [PDF]

open access: yes, 2008
Elastic strain, electrical bias, and localized geometric deformations were applied to elliptical whispering-gallery-mode resonators fabricated with lithium niobate. The resultant perturbation of the mode spectrum is highly dependant on the modal indices,
Maleki, Lute, Mohageg, Makan
core   +1 more source

Research of Constructive and Technological Methods for Forming a Silicon Disk Resonator with Whispering Gallery Modes

open access: yesPhotonics, 2020
This article presents the results of a computer simulation of whispering gallery modes in the structure of a silicon disk resonator with a wedge-shaped profile made on a silicon-on-isolator base (SOI).
Anastasia Yakuhina   +4 more
doaj   +1 more source

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