Results 61 to 70 of about 12,496 (247)

Narrow Linewidth Distributed Bragg Reflectors Based on InGaN/GaN Laser

Micromachines, 2019
A variety of emerging technologies, such as visible light communication systems, require narrow linewidths and easy-to-integrate light sources. Such a requirement could be potentially fulfilled with the distributed Bragg reflector (DBR) lasers, which are
Wuze Xie, Junze Li, Mingle Liao, Zejia Deng, Wenjie Wang, Song Sun   +5 more
doaj   +1 more source

High-absorbance resonant-cavity-enhanced free-standing Ge photodetector for infrared detection at 1550 nm wavelength

AIP Advances, 2023
A novel free-standing resonant-cavity-enhanced (RCE) Ge thin-film absorber is designed with a bottom distributed Bragg reflector (DBR) for infrared photodetection at 1550 nm wavelength based on a Si substrate.
Ching-Yu Hsu, Zingway Pei, Jia-Ming Liu
doaj   +1 more source

Polyethersulfone membrane coated with Dragon blood resin: Effect of input parameters and optimization using response surface methodology

South African Journal of Chemical Engineering, 2023
This study investigates the effectiveness of dragon blood resin (DBR) as a hydrophilic additive to prevent fouling on membrane surfaces. The input parameters, including DBR, Fe3+, NMP concentration, and coating time were studied to understand their ...
Aulia Chintia Ambarita, Nasrul Arahman, Muhammad Roil Bilad, Bahar Yavuztürk Gül, Sevde Korkut, Ayşe Yüksekdağ, Oğuz Orhun Teber, İsmail Koyuncu, Sri Mulyati   +8 more
doaj   +1 more source

A simplified two‐station approach for modeling metabolism in dam tailwaters subject to diel flow variation

Limnology and Oceanography: Methods, EarlyView.
Abstract Tailwaters are ubiquitous and highly managed ecosystems whose food webs often rely disproportionately on autochthonous energy. In situ continuous dissolved oxygen data are increasingly being used to estimate gross primary productivity and ecosystem respiration in rivers, but this approach is complicated in tailwaters, where upriver ...
Ian W. Bishop, Bridget R. Deemer, Theodore A. Kennedy, Robert A. Payn, Robert O. Hall Jr., Charles B. Yackulic   +5 more
wiley   +1 more source

Implant Isolation of AlGaAs Multilayer DBR

, 2015
AlGaAs distributed Bragg reflector (DBR) structures isolation by proton irradiation was studied. The evolution of n- and p-type DBR structures lateral sheet resistance with the irradiated proton dose was measured.
Coelho, A V P, Jagadish, Chennupati, Tan, Hark Hoe, Boudinov, H, Lippen, T V   +4 more
core   +2 more sources

Porous-DBR micro-Cavity

, 2023
Vertical cavity surface emitting lasers (VCSEL) are of great interest for photonic and telecom applications, however challenges in fabrication of efficient VSCEL GaN devices are yet to be resolved. In this work we present a study of micro-photoluminescence (PL) emission from a novel InGaN quantum well (QW) emitting structure with integrated micro ...
Andrei Sarua, Jon Pugh, Edmund Harbord, Martin Cryan   +3 more
openaire   +1 more source

Epitaxial Integration of III–V Membrane Photodetectors With Lateral p–i–n Junctions on the Silicon‐On‐Insulator Waveguide Platform

Laser &Photonics Reviews, EarlyView.
Epitaxial growth forms III–V membranes directly atop the silicon waveguide layer on SOI, while in‐plane in situ doping defines lateral p–i–n InP/InGaAs junctions in a single growth step. The membrane photodetectors achieve 50 Gb/s NRZ‐OOK operation.
Zhao Yan, Yifu Chen, Martin Ebert, Ka Ming Wong, Wenjie Wang, Tim Grieb, Florian F. Krause, Andreas Rosenauer, Graham T. Reed, David J. Thomson, Qiang Li   +10 more
wiley   +1 more source

Piezoelectrically tunable, narrow linewidth photonic integrated extended-DBR lasers [PDF]

Recent advancements in ultra-low-loss silicon nitride (Si3N4)-based photonic integrated circuits have surpassed fiber lasers in coherence and frequency agility.
Siddharth, Anat, Voloshin, Andrey S., Qiu, Zheru, Lihachev, Grigory, Kenning, Scott, Riemensberger, Johann, Attanasio, Alaina, Bianconi, Simone, Zhang, Junyin, Bancora, Andrea, Wang, Rui Ning, Kippenberg, Tobias, Kippenberg, Tobias J., Voloshin, Andrey, Bhave, Sunil A.   +14 more
core   +1 more source

Anti-Doping Monitoring Web-Based Android for Athletes Disabilities

Journal of Coaching and Sports Science
The usage of doping has been banned in the world of sports. This ban is regulated by law and must be adhered to by all athletes. This research aimed to identify the need for efforts to prevent doping use and develop a monitoring tool for doping ...
Fadilah Umar, Dina Listiani, Slamet Riyadi, Misbah Misbah   +3 more
doaj   +1 more source

Reliability, Validity, and Acceptability of the Scope Classroom Observation Code (SCOC) to Identify Attention Deficit Hyperactivity Disorder (ADHD)‐Related Behaviours in UK Primary Schools

Psychology in the Schools, EarlyView.
ABSTRACT ADHD is a prevalent disorder that impacts academic and social functioning in childhood. Teachers often struggle to identify ADHD. This study evaluated the Scope Classroom Observation Checklist's (SCOC) reliability, validity, and acceptability as a potential screening measure for school staff to identify ADHD characteristics.
Charlotte Rose Kelman, Obioha C. Ukoumunne, Darren Moore, Jo Thompson Coon, Kirsty Cordwell, Abigail Russell   +5 more
wiley   +1 more source