Results 41 to 50 of about 1,794 (182)
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. +6 more
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Advanced Materials Technologies, EarlyView.Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu +8 more
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Talbot interference of whispering gallery modes
APL PhotonicsThe Talbot self-imaging phenomenon is a fundamental interference effect that is natural to all waves with a periodic structure. We theoretically and experimentally study the Talbot effect for optical waves in the transverse angular domain using ...
Matias Eriksson +2 more
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Solid and hollow whispering gallery mode resonators for all optical switch [PDF]
EPJ Web of ConferencesWhispering-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 +5 more
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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 +4 more
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Advanced Optical Materials, EarlyView.Whispering‐gallery‐mode microresonators with sharp resonant peaks enable photonic barcoding. Similar to a chameleon, a rare‐earth‐free microcavity with π‐conjugated PAHs enables visibleto‐near infrared color generation from a single microbead. The unique resonat emission (spectral barcode) can be dynamically transformed via excitation wavelength change,
Barun Kumar Barman +6 more
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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 +2 more
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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
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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 +3 more
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Photon‐Sphere Modes in Curved Optical Microcavities: A Black‐Hole Analogue Laser
Advanced Science, EarlyView.An optical analogue of a Schwarzschild black hole is realized using curved microcavities that preserve light‐like geodesics. A new family of laser modes confined around the photon sphere is identified alongside conventional whispering‐gallery modes. Analytical theory, numerical simulations, and experiments reveal curvature‐induced confinement, enabling
Chenni Xu +9 more
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