Results 71 to 80 of about 3,282 (176)

Defect Centers in the Silicate Glasses: Basics, Implications, and Mitigation Strategies for the Generation of Visible Light

Laser &Photonics Reviews, EarlyView.
This review outlines the essential features of the defect color centers associated with silicate glass, considering the recent developments in visible laser development. The review is crucial for researchers wanting a primer in this important field within glass science because it covers the basics right through to mitigation.
Stuart D. Jackson, John Ballato
wiley   +1 more source

Monolithic Silicon Photonic Transceiver for 160 km Multi‐Channel Quantum Entanglement Distribution in Fiber Network

Laser &Photonics Reviews, EarlyView.
The paper demonstrates a chip scale (4.5 x 4.5 mm2) silicon integrated system that is capable of distributing entangled photons over 160 km single mode fibers without dispersion compensations and external optical filters. The results highlight the potential for massive production and large‐scale deployed quantum integrated circuits for a future ...
Yue Qin, Hongnan Xu, Hon Ki Tsang
wiley   +1 more source

Pseudomagnetic Control of Light Waves in the Electrically Tunable Photonic Crystals with Deformation Engineering

Laser &Photonics Reviews, EarlyView.
This work presents a triaxially deformed photonic crystal cavity on the SOI substrate, enabling the localization and resonating of photons via pseudomagnetic fields. Through coupling with Si waveguides and leveraging the thermo‐optic effect, electrically tunable pseudo‐magnetism‐induced optical resonances can be achieved in the photonic integrated ...
Zhipeng Qi, Hao Sun, Guohua Hu, Xiumin Song, Yaohui Sun, Wanghua Zhu, Bo Liu, Xuechao Yu, Francois M. Peeters, Yiping Cui   +9 more
wiley   +1 more source

High‐Entropy Materials for Electromagnetic Wave Absorption and EMI Shielding

MetalMat, EarlyView.
This review unravels how compositional design, microstructure, and synthesis of high‐entropy materials converge to govern electromagnetic performance. It outlines critical knowledge gaps and future directions for EM absorption and shielding technologies.
Erdem Tevfik Özdemir, Mustafa Erol, Murat Alkan   +2 more
wiley   +1 more source

Machine learning‐enabled prediction of oxide glasses’ dielectric constants via augmented data and physicochemical descriptors

Materials Genome Engineering Advances, EarlyView.
Data augmentation and physicochemical descriptors achieve precise dielectric constant prediction in oxide glasses, reducing error by 72%. Structural descriptors (69.9% importance) establish glass network engineering as the key optimization pathway, validated in novel Y2O3/La2O3 glasses.
Zeyu Kang, Yi Cao, Lu Liu, Wenkai Gao, Jianhao Fu, Junfeng Kang, Yunlong Yue   +6 more
wiley   +1 more source

Nucleation and Propagation of Traveling Charge Domains in a Planar AlGaN/GaN Triode Structure

physica status solidi (a), EarlyView.
This work presents a novel model for the nucleation of charge domain instabilities in semiconductors exhibiting negative differential drift velocity, identifying diffusion as the key factor inhibiting domain formation. A planar Gunn triode structure is proposed which overcomes obstacles to the realization of GaN‐based Gunn effect devices with ...
Jonathan Sculley, P. Douglas Yoder
wiley   +1 more source

Impact of Parasitic Conductive Interfaces on the DC and RF Performance of GaN‐on‐GaN HEMTs

physica status solidi (a), EarlyView.
GaN‐on‐GaN HEMTs suffering from a parasitic conductive interface show a power added efficiency drop from an expected 50 % to 15 %. The interface forms on GaN wafers prior to epitaxy due to Si contamination to absorb RF power, introduce propagation loss and loading effects, reduce gain by 50 %, and fmax and Pout by 40 % compared to GaN‐on‐SiC HEMTs ...
Amer Bassal, Serguei Chevtchenko, Frank Schnieder, Thomas Flisgen, Olof Bengtsson, Frank Brunner, Oliver Hilt   +6 more
wiley   +1 more source

Impacts of atmospheric river reconnaissance dropsondes on ECMWF Integrated Forecasting System precipitation forecasts

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Impacts of Atmospheric River Reconnaissance dropsonde observations on precipitation forecasts over the U.S. West Coast are examined in the European Centre for Medium‐Range Weather Forecasts (ECMWF) Integrated Forecasting System (IFS), using observing‐system experiments.
Jia Wang, David A. Lavers, Luca Delle Monache, Bruce Ingleby, Minghua Zheng, Xingren Wu, Fred Martin Ralph, Florian Pappenberger   +7 more
wiley   +1 more source

High‐Purity Single‐Photon Emission in the Telecom O‐Band from Droplet‐Epitaxy InAs Quantum Dots Integrated into a GaAs/AlGaAs Planar Microcavity on Vicinal GaAs(111)A Platform

Advanced Quantum Technologies, EarlyView.
High‐purity single‐photon emission at telecom O‐band is demonstrated from droplet‐epitaxy InAs quantum dots embedded in a GaAs/AlGaAs microcavity. Strain engineering via an InAlAs buffer enables broadband telecom emission with high purity, short lifetimes, and enhanced extraction.
Paweł Wyborski, Artur Tuktamyshev, Martin A. Jacobsen, Abdulmalik A. Madigawa, Stefano Vichi, Niels Gregersen, Stefano Sanguinetti, Battulga Munkhbat   +7 more
wiley   +1 more source

Low‐Loss Polarization‐Maintaining Router for Single and Entangled Photons at a Telecom Wavelength

Advanced Quantum Technologies, EarlyView.
A novel electro‐optic routing of arbitrarily polarized single photons and, crucially, multi‐photon entangled states is demonstrated. Utilizing optics with near‐normal incidence and cross‐aligned electro‐optic crystals, low‐loss polarization‐maintaining routing is achieved with a minimal number of components.
Pengfei Wang, Soyoung Baek, Masahiro Yabuno, Shigehito Miki, Hirotaka Terai, Fumihiro Kaneda   +5 more
wiley   +1 more source