Results 11 to 20 of about 1,766 (134)

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

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

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

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

Investigation on the Crack Effect in the Cylinder and Matrix on the Backscattering Field Frequency Specifications using the Finite Element Method [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2022
A novel method to determine the health of the industrial parts is using the ultrasound scattering waves. Any changes in the structure of the scattering object or in the boundary conditions will cause a change in the scattering field.
Omid Noormohammadi Arani   +2 more
doaj   +1 more source

Out-of-plane trion emission in monolayer WSe2 revealed by whispering gallery modes of dielectric microresonators

open access: yesCommunications Materials, 2021
Out-of-plane photon emission in 2D semiconductors is rare but crucial for efficient light manipulation in planar optoelectronic devices and photonic chips.
Daniel Andres-Penares   +5 more
doaj   +1 more source

Theoretical Analysis of the Refractometric Sensitivity of a Coated Whispering Gallery Mode Resonator for Gas Sensing Applications

open access: yesSensors, 2022
We present a theoretical analysis of the refractometric sensitivity of a spherical microresonator coated with a porous sensing layer performed for different whispering gallery modes. The effective refractive index of the modes is also calculated.
Davor Ristić   +4 more
doaj   +1 more source

Er3+ doped tellurite whispering gallery mode microlasers in 1.5 μm–1.61 μm wavelength region generated by 0.98 μm and 1.48 μm pump lasers

open access: yesOptical Materials: X, 2023
In this paper, we demonstrate Er3+ doped tellurite single and multi-mode microlasers in 1.5 μm–1.6 μm wavelength range fabricated via the plasma torch method.
Snigdha Thekke Thalakkal   +7 more
doaj   +1 more source

Carrier-induced refractive index change observed by a whispering gallery mode shift in GaN microrods

open access: yesNew Journal of Physics, 2015
Vertical oriented GaN microrods were grown by metal-organic vapor phase epitaxy with four different n-type carrier concentration sections above 10 ^19 cm ^−3 along the c -axis.
C Tessarek   +4 more
doaj   +1 more source

Effect of tapering diameters with microbottle resonator for formaldehyde (CH2O) liquid sensing

open access: yesSensing and Bio-Sensing Research, 2019
In this study, we demonstrate the effect of the microbottle resonator (MBR) based on whispering gallery modes (WGMs) with two different diameters of tapered microfibre and its experiment with the formaldehyde (CH2O) liquid sensor. The MBR with the bottle
Md Ashadi Md Johari   +8 more
doaj   +1 more source

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