Results 41 to 50 of about 1,189,387 (221)

Optical Whispering-Gallery-Mode Microbubble Sensors

Micromachines, 2022
Whispering-gallery-mode (WGM) microbubble resonators are ideal optical sensors due to their high quality factor, small mode volume, high optical energy density, and geometry/design/structure (i.e., hollow microfluidic channels). When used in combination with microfluidic technologies, WGM microbubble resonators can be applied in chemical and biological
Xuyang Zhao, Zhihe Guo, Yi Zhou, Junhong Guo, Zhiran Liu, Yuxiang Li, Man Luo, Xiang Wu   +7 more
openaire   +3 more sources

Hollow whispering gallery resonators [PDF]

, 2018
In recent years, whispering gallery mode (WGM) devices have extended their functionality across a number of research fields from photonics device development to sensing applications.
Lei, Fuchuan, Jonathan M. Ward, Nic Chormaic, Síle, Síle Nic Chormaic, Yong Yang, Fuchuan Lei, Sho Kasumie, Ramgopal Madugani, Ward, Jonathan M., Madugani, Ramgopal, Kasumie, Sho, Yang, Yong   +11 more
core   +1 more source

Open whispering gallery mode resonators

Optics 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

Whispering gallery resonators for optical sensing [PDF]

, 2017
In recent years, whispering gallery mode devices have extended their functionality across a number of research fields from photonics to sensing applications.
Lei, Fuchuan, Nic Chormaic, Síle, Síle Nic Chormaic, Yong Yang, Ward, Jonathan, Ramgopal Madugani, Sho Kasumie, Fuchuan Lei, Jonathan Ward, Madugani, Ramgopal, Kasumie, Sho, Yang, Yong   +11 more
core   +1 more source

Coupling coefficients of the Spherical dielectric microresonators with whispering gallery modes

Vìsnik Nacìonalʹnogo Tehnìčnogo Unìversitetu Ukraïni Kììvsʹkij Polìtehnìčnij Ìnstitut: Serìâ Radìotehnìka, Radìoaparatobuduvannâ, 2015
The calculation results of the Spherical dielectric microresonators coupling coefficients with whispering gallery modes are presented. Microresonator coupling coefficients as a functions of main parameters is considered. S-matrix frequency dependences of 
A. A. Trubin
doaj   +1 more source

Whispering gallery mode

Eos, 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

Low threshold Rhodamine-doped whispering gallery mode microlasers fabricated by direct laser writing

Scientific Reports, 2017
The combination of the outstanding properties of whispering gallery modes with both the flexibility and ease of processing of polymers is particularly attractive for photonics applications.
Nathália B. Tomazio, Leonardo De Boni, Cleber R. Mendonca   +2 more
doaj   +1 more source

A scatterer‐assisted whispering‐gallery‐mode microprobe

Nanophotonics, 2018
Abstract A fiber‐based whispering‐gallery‐mode (WGM) microprobe, combining both the high optical field enhancement of the WGMs and the compact structure of the optical fiber, is highly desired for sensing and imaging. Here we report a WGM microsphere resonator coupled to a single‐mode fiber interfaced by a graded‐index lens.
Shu Fangjie, Jiang Xuefeng, Zhao Guangming, Yang Lan   +3 more
openaire   +3 more sources

Whispering-gallery modes promote enhanced optical backflow in a perforated dielectric microsphere

, 2021
Optical energy flow inside a dielectric microsphere is usually codirected with the optical wavevector. At the same time, if the optical field in a microsphere is in resonance with one of the high-quality spatial eigenmodes (whispering-gallery modes ...
Oleg V. Minin (3943118), Yury E. Geints (14359782), Igor V. Minin (3943121)   +2 more
core   +1 more source

Purely Equatorial Lasing in Spherical Liquid Crystal Polymer Microlasers with Bipolar Refractive Index Profile

Advanced Optical Materials, EarlyView.
Spherical liquid crystal polymer microlasers with a bipolar configuration confine lasing to a single equatorial plane, allowing precise control over where the laser emission is generated. The anisotropic refractive index profile additionally lifts the energy degeneracy of azimuthal whispering gallery modes, which causes a characteristic splitting into ...
David Ripp, Nachiket Pathak, Vera M. Titze, Catriona A. Thomson, Andreas Mischok, Marcel Schubert   +5 more
wiley   +1 more source