Results 41 to 50 of about 21,135 (203)

Open whispering gallery mode resonators

open access: yesOptics Letters
There are some issues with traditional whispering gallery mode (WGM) resonators such as poor light extraction and a dense mode spectrum. In this paper, we introduce a solution to these limitations by proposing open WGM (OWGM) resonators that effectively reduce the mode density and enable directional radiation through a connected waveguide at the ...
D. R. Kazanov, A. M. Monakhov
openaire   +3 more sources

Cavity QED with Diamond Nanocrystals and Silica Microspheres

open access: yes, 2006
Normal mode splitting is observed in a cavity QED system, in which nitrogen vacancy centers in diamond nanocrystals are coupled to whispering gallery modes in a silica microsphere.
Armani D. K.   +31 more
core   +1 more source

Whispering gallery mode

open access: yesEos, Transactions American Geophysical Union, 1973
High altitude balloon platforms positioned a thousand miles apart have been used successfully in an experiment to establish the feasibility of a technique for propagating medium length radio waves through the D layer, the lower layer of the ionosphere.The new technique is called the D‐Layer Whispering Gallery Mode because of its similarity to the ...
openaire   +1 more source

Development of measuring system of whispering gallery mode resonances for evaluating a diameter of microsphere

open access: yesNihon Kikai Gakkai ronbunshu, 2019
A sphere is a frequently used shape as a reference of calibration for 3-dimensional measurement instruments because of its isotropic shape. It is demanded to measure the diameter of the reference sphere with high accuracy.
Masaki MICHIHATA   +4 more
doaj   +1 more source

Inner structure of ZnO microspheres fabricated via laser ablation in superfluid helium

open access: yes, 2017
ZnO microspheres fabricated via laser ablation in superfluid helium were found to have bubble-like voids. Even a microsphere demonstrating clear whispering gallery mode resonances in the luminescence had voids.
Ashida, Masaaki   +2 more
core   +1 more source

Compensation of thermal nonlinearity effect in optical resonators [PDF]

open access: yes, 2011
Thermal nonlinearity is known to cause bistability in Whispering Gallery Mode (WGM) resonators and to destabilize the red slope of the Lorentzian resonant curve.
Chen, Tong   +3 more
core   +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

Label-Free Biological and Chemical Sensing Using Whispering Gallery Mode Optical Resonators: Past, Present, and Future

open access: yesSensors, 2017
Sensitive and rapid label-free biological and chemical sensors are needed for a wide variety of applications including early disease diagnosis and prognosis, the monitoring of food and water quality, as well as the detection of bacteria and viruses for ...
Judith Su
doaj   +1 more source

Self‐Assembled Inorganic Nanomembrane Tubes: Rolled‐Up Piezoelectrics for Microacoustic Wave‐Based Actuators and Sensors

open access: yesAdvanced Materials, EarlyView.
This study demonstrates a self‐assembly process to generate free‐standing piezoelectric nanomembranes, forming ultracompact microtubular acoustic wave sensors and actuators. The miniaturized 3D piezoelectric platform reported in this work can be applied in telecommunication, energy harvesting, and acoustofluidics. Moreover, the 3D self‐assembly can add
Raphaël C. L‐M. Doineau   +9 more
wiley   +1 more source

Nonlinear properties of high-Q optical microresonators in normal dispersion range

open access: yesEPJ Web of Conferences, 2017
We demonstrate the generation of Kerr frequency combs and platicons in whispering gallery mode crystalline microresonators in normal group velocity regime at 780 nm and 1064 nm wavelengths.
Shitikov Artem   +5 more
doaj   +1 more source

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