Results 101 to 110 of about 1,189,387 (221)

Travelling, Staying, Working, Imagining: Space and the Practice of Internationalism, c1900–1950

open access: yesHistory Compass, Volume 24, Issue 5, October 2026.
ABSTRACT This article considers space as a key element in the practice of internationalism in the first half of the 20th century. Drawing on approaches in historical geography and cultural history, the article proposes four analytical categories through which internationalism might be explored in the period between 1900 and 1950.
Julia Eichenberg, Tomás Irish
wiley   +1 more source

Whispering gallery mode resonators with J-aggregates

open access: yesOptics Express, 2011
We have studied the optical properties of a hybrid system consisting of cyanine dye J-aggregates attached to a spherical microcavity. A periodic structure of narrow peaks was observed in the photoluminescence spectrum of the J-aggregates, arising from the coupling between the emission of J-aggregates and the whispering gallery modes (WGMs) of the ...
Melnikau, D.   +4 more
openaire   +3 more sources

Vectorial whispering gallery mode solvers based on straight waveguide modes

open access: yes, 2014
In this paper, whispering gallery mode solvers based on a set of corresponding straight waveguide modes are proposed. The solvers project whispering gallery modes onto a linear combination of straight waveguide modes through a cavity residual operator ...
W. Yu, T. Lu, S. Herchak
core   +1 more source

Resonance Frequency of Optical Microbubble Resonators: Direct Measurements and Mitigation of Fluctuations

open access: yesSensors, 2016
This work shows the improvements in the sensing capabilities and precision of an Optical Microbubble Resonator due to the introduction of an encaging poly(methyl methacrylate) (PMMA) box.
Alessandro Cosci   +10 more
doaj   +1 more source

Whispering-gallery-likel modes in square resonators

open access: yes, 2003
The mode frequencies and field distributions of whispering-gallery (WG)-like modes of square resonators are obtained analytically, which agree very well with the numerical results calculated by the FDTD technique and Pade approximation method.
Huang YZ   +4 more
core  

Visualizing the Nanoscopic Field Distribution of Whispering-Gallery Modes in a Dielectric Sphere by Cathodoluminescence. [PDF]

open access: yesACS Photonics, 2023
Machfuudzoh I   +5 more
europepmc   +1 more source

Modeling of an Optical Sensor Based on Whispering Gallery Modes (WGMs) on the Surface Guiding Layer of Glass Filaments

open access: yesSensors, 2008
A ring-resonator-based refractive index sensor is proposed in this paper. Glass filaments with surface guiding layers created by ion exchange are crossed with a fiber taper to act as a ring resonator sensor.
Xianfeng Chen, Lei Shi, Wei Tan
doaj   +1 more source

High-Q TM whispering-gallery modes in three-dimensional microcylinders

open access: yes, 2007
We present a generation condition for realizing high-Q TM whispering-gallery modes (WGMs) in semiconductor microcylinders. For microcylinders with symmetry or weak asymmetry vertical waveguiding, we show that TM WGMs can have a high Q factor, with the ...
Huang YZ (Huang Yong-Zhen)   +3 more
core  

Lasing on Higher-Order Whispering Gallery Modes at Room Temperature [PDF]

open access: yes, 2012
[[abstract]]We report a direct method to observe higher-order whispering gallery modes in vertical cavity surface emitting lasers (VCSELs) at room temperature.
Chih-Yao Chen;YuanYao Lin;Ching-Jen Cheng;Tsin-Dong Lee;Ray-Kuang Lee
core  

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