Results 71 to 80 of about 1,794 (182)

Toward Reliable Metal Halide Perovskite FETs: From Electronic Structure and Device Physics to Stability and Performance Engineering

open access: yesAdvanced Electronic Materials, Volume 12, Issue 7, 6 April 2026.
Metal halide perovskite field‐effect transistors (PeFETs) offer great promise for flexible, low‐cost, and high‐performance due to their excellent charge carrier properties. However, challenges like ion migration, hysteresis, and instability limit their performance.
Georgios Chatzigiannakis   +13 more
wiley   +1 more source

Floating GaN whispering gallery mode micro-ring lasing with Burstein–Moss effect

open access: yesAIP Advances, 2020
A floating GaN micro-ring is fabricated by standard semiconductor technology. Under pump power conditions, ultraviolet lasing with a quality factor of 3600 is obtained.
Gangyi Zhu   +6 more
doaj   +1 more source

Laser Stabilized to a Fiber Interferometer With Close‐To‐Zero Temperature Sensitivity

open access: yesLaser &Photonics Reviews, Volume 20, Issue 8, 17 April 2026.
A laser stabilized to a hollow‐core fibre interferometer is presented. The interferometer is designed to have near‐zero temperature phase‐sensitivity. Laser stabilized to this interferometer put in a non‐vacuum environment achieves ±550 kHz frequency variation over 100 h and an Allan deviation of 2 × 10−14τ, which is comparable to miniature ULE ...
Bo Shi   +7 more
wiley   +1 more source

Fast Simulation of Wide‐Angle Coherent Diffractive Imaging

open access: yesLaser &Photonics Reviews, Volume 20, Issue 7, 6 April 2026.
The propagation multi‐slice Fourier transform method is introduced as an accurate and efficient approach for describing light scattering for arbitrarily shaped objects. Its exceptional suitability for simulating coherent diffractive imaging of nanoparticles in the XUV and soft X‐ray range is demonstrated.
Paul Tuemmler   +3 more
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

Electrodynamical Light Trapping Using Whispering-Gallery Resonances in Hyperbolic Cavities

open access: yesPhysical Review X, 2014
We theoretically study spherical cavities composed of hyperbolic metamaterials with indefinite permittivity tensors. Such cavities are capable of electrodynamically confining fields with deep subwavelength cavity sizes.
Chihhui Wu   +3 more
doaj   +1 more source

Janet Malcolm's Self‐Portrait

open access: yes
Critical Quarterly, EarlyView.
Jerome Boyd Maunsell
wiley   +1 more source

Coupling coefficients of different disk microresonators with whispering gallery modes

open access: yesVìsnik Nacìonalʹnogo Tehnìčnogo Unìversitetu Ukraïni Kììvsʹkij Polìtehnìčnij Ìnstitut: Serìâ Radìotehnìka, Radìoaparatobuduvannâ, 2017
The coupling coefficients of the disk microresonators consisting of different dielectrics are presented. The analytical expressions for the coupling coefficients are obtained.
A. A. Trubin
doaj   +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

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

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