Results 71 to 80 of about 1,201,915 (262)

Solid and hollow whispering gallery mode resonators for all optical switch [PDF]

EPJ Web of Conferences
Whispering-gallery-modes resonators (WGMR) are effective switching devices when either coated or filled with non-linear material. We present examples of all-optical switching of hybrid WGM using polyfluorene, a methacrylate azobenzene and an acrylate ...
Frigenti Gabriele, Murzina Tatyana V., Farnesi Daniele, Pelli Stefano, Nunzi Conti Gualtiero, Soria Silvia   +5 more
doaj   +1 more source

Thermal shift of whispering gallery modes in tellurite glass microspheres

Results in Physics, 2020
The tremendous progress made in recent years in the production of tellurite glasses has led to the development of different optical elements and devices on their basis such as microresonators and microlasers.
A.V. Andrianov, M.P. Marisova, V.V. Dorofeev, E.A. Anashkina   +3 more
doaj   +1 more source

Probing higher order optical modes in all-dielectric nanodisk, -square, and -triangle by aperture type scanning near-field optical microscopy

Nanophotonics, 2021
All-dielectric nanoantennas, consisting of high refractive index semiconductor material, are drawing a great deal of attention in nanophotonics. Owing to their ability to manipulate efficiently the flow of light within sub-wavelength volumes, they have ...
Frolov Aleksandr Yu., Van de Vondel Joris, Panov Vladimir I., Van Dorpe Pol, Fedyanin Andrey A., Moshchalkov Victor V., Verellen Niels   +6 more
doaj   +1 more source

WGM Single‐Molecule Validation of pH‐Dependent Molecular Energetics at Gold Nanointerfaces: Influence of Buffer Molecules on Glyphosate Ligand Binding

Advanced Science, EarlyView.
Single‐molecule optical sensing reveals how pH and buffer molecules regulate glyphosate interactions with gold nanorods. Combined experiments and theoretical calculations show that changes in molecular charge and competition from buffer species determine whether glyphosate binds transiently or persistently.
Kulathunga Mudalige Kalani Perera, Srikanth Pedireddy, Sivaraman Subramanian, Frank Vollmer   +3 more
wiley   +1 more source

Identifying modes of large whispering-gallery mode resonators from the spectrum and emission pattern. [PDF]

Optics Express, 2014
Identifying the mode numbers in whispering-gallery mode resonators (WGMRs) is important for tailoring them to experimental needs. Here we report on a novel experimental mode analysis technique based on the combination of frequency analysis and far-field ...
G. Schunk, J. Fürst, M. Förtsch, D. Strekalov, U. Vogl, F. Sedlmeir, H. Schwefel, G. Leuchs, C. Marquardt   +8 more
semanticscholar   +1 more source

Excitation of forced modes in the dielectric disk resonator-diffraction grating system [PDF]

Журнал нано- та електронної фізики, 2010
In this work the strip-like diffraction grating influence on the spectrum of “whispering gallery” modes of the disk dielectric resonator was studied experimentally. The conditions of single-mode excitation in a wide frequency range had been defined.
A.I. Fisun, O.N. Sukhoruchko, O.I. Belous   +2 more
doaj  

Trapping Electromagnetic Solitons in Cylinders

Mathematical Modelling and Analysis, 2014
Electromagnetic waves in vacuum or dielectrics can be confined in unbounded cylinders in such a way that they turn around the main axis. For particular choices of the cylinder's section, interesting stationary configurations may be assumed.
Daniele Funaro
doaj   +1 more source

POSSIBILITY FOR FREQUENCY STABILIZATION OF MILLIMETER WAVELENGTH SOLID-STATE SOURCE BY A SCREENED DIELECTRIC RESONATOR [PDF]

Radio Physics and Radio Astronomy, 2016
Purpose: Showing the possibility in principle of the use of a screened dielectric resonator excited by the planar waveguide to stabilize the frequency of solid-state sources in the millimeter wavelength range.
A. E. Kogut, I. K. Kuz’michev, R. S. Dolia, S. O. Nosatiuk, Ye. A. Shulga   +4 more
doaj   +1 more source

Massively Multiplexed Photonic Chip With Cross‐Channel Fusion For Harmonized Biosensing

Advanced Science, EarlyView.
We introduce a transformative sensing platform integrating photonic multiplexing with over 10 000 sensors and a deep‐learning framework that combines domain adaptation and cross‐channel fusion for harmonized operation across heterogeneous chips. The platform achieves 99.3% identification accuracy and relative prediction errors of 10−4$^{-4}$ for ...
Ivan Saetchnikov, Elina Tcherniavskaia, Andreas Ostendorf, Anton Saetchnikov   +3 more
wiley   +1 more source

Q-factor limits for far-field detection of whispering gallery modes in active microspheres.

Optics Express, 2015
This paper investigates the Q-factor limits imposed on the far-field detection of the whispering gallery modes of active microspherical resonators. It is shown that the Q-factor measured for a given active microsphere in the far-field using a microscope ...
N. Riesen, T. Reynolds, A. François, M. R. Henderson, T. Monro   +4 more
semanticscholar   +1 more source