Results 11 to 20 of about 5,781,485 (283)

Transparent Ceramic@Sapphire Composites for High‐Power Laser‐Driven Lighting [PDF]

Advanced Science
Although phosphor ceramics are promising candidates for high‐power laser lighting applications, their performance is seriously restricted by luminance saturation effects. This study proposes a novel transparent ceramic@sapphire composite material design,
Guoyu Xi, Shisheng Lin, Tongjie Shen, Tao Pang, Zikang Yu, Yang Peng, Lingwei Zeng, Yuxiang Ke, Zhehong Zhou, Ronghua Chen, Feng Huang, Daqin Chen   +11 more
doaj   +2 more sources

55% Efficient High-Power Multijunction Photovoltaic Laser Power Converters for 1070 nm

Photonics
High-efficiency multijunction laser power converters are demonstrated for the first time at high power for optical inputs around 1070 nm. The InP-based photovoltaic power-converting III–V heterostructures are designed with eight lattice-matched InGaAsP ...
Simon Fafard, Denis Masson
doaj   +3 more sources

A 2-Gbps low-SWaP quantum random number generator with photonic integrated circuits for satellite applications [PDF]

npj Quantum Information
We introduce a low size, weight and power quantum random number generator (QRNG) utilizing compact integrated photonic asymmetric Mach-Zehnder interferometers (AMZIs). Our QRNG is based on phase-diffusion in two gain-switched lasers interfered within two
Oliver M. Crampton, Toby J. Dowling, Thomas Roger, Peter R. Smith, James F. Dynes, Matthew S. Winnel, Davide G. Marangon, Mirko Sanzaro, Ravinder Singh, Chithrabhanu Perumangatt, Joseph A. Dolphin, Taofiq K. Paraiso, Andrew J. Shields   +12 more
doaj   +2 more sources

High-performance laser power converters with resistance to thermal annealing

Optics Express
High-performance laser power converters are crucial for laser wireless power transmission systems. Through the optimization of the resistive thermal annealing temperature applied to the laser power converter, the conversion efficiency reaches 55.0%. For 830 nm laser irradiation, the conversion efficiency further elevates to 59.3%.
Yudan Gou, Guoliang Deng
exaly   +3 more sources

Analysis and Control Aspects of Brushless Induction Machines with Rotating Power Electronic Converters [Elektronisk resurs]

, 2012
This thesis deals with the steady-state, dynamic and control aspects of new type of brushless configuration of a doubly-fed induction machine in which the slip rings and carbon brushes are replaced by rotating power electronics and a rotating exciter ...
Sadarangani, Chandur,, Malik, Naveed ur Rehman,, Peretti, Luca,   +2 more
core   +9 more sources

Patterned phosphor-in-glass films with efficient thermal management for high-power laser projection displays

Journal of Advanced Ceramics, 2023
Recently, high-performance color converters excitable by blue laser diode (LD) have sprung up for projection displays. However, the thermal accumulation effect of the color converters is a non-negligible problem under high-power LD irradiation.
Zezhong Yang, Song Zheng, Guoyu Xi, Tao Pang, Shaoxiong Wang, Qingying Ye, Bin Zhuang, Daqin Chen   +7 more
doaj   +1 more source

Numerical Simulation and Optimization of Metal Grid Architecture for Laser Photovoltaic Converters

Zhongguo dianli, 2021
Laser power-over-fiber (LPoF) technology is one of the crucial means to energize the monitoring sensor nodes for electrical equipment in high-voltage environment.
Jianguo WEI, Weilin LIU, Hui DENG, Hui HUANG, Jia ZHANG   +4 more
doaj   +1 more source

The reduction of the thermal quenching effect in laser-excited phosphor converters using highly thermally conductive hBN particles

Scientific Reports, 2021
Phosphor converters for solid state lighting applications experience a strong thermal stress under high-excitation power densities. The recent interest in laser diode based lighting has made this issue even more severe.
Akvilė Zabiliūtė-Karaliūnė, Justina Aglinskaitė, Prancis̆kus Vitta   +2 more
doaj   +1 more source

Investigation of the Effect of Temperature Stabilization in Radiation–Heat Converters Based on a Strong Absorbing Coating

Photonics, 2021
Light–heat converters are promising for further development of contact laser surgery. The simplest converter consists of an optical fiber with a strong absorbing layer at the tip.
Natalia Sapogova, Vladimir Bredikhin, Andrey Afanasiev, Vladislav Kamensky, Nikita Bityurin   +4 more
doaj   +1 more source

On the temperature dependence of dual‐junction laser power converters [PDF]

Progress in Photovoltaics: Research and Applications, 2016
AbstractDual‐junction GaAs laser power converters optimized for one monochromatic wavelength are presented, and their temperature dependence is experimentally evaluated. External quantum efficiency and irradiance‐dependent current–voltage measurements (10 to 104 W/cm2) under monochromatic laser light (809 nm) have been undertaken to quantify ...
S. Kasimir Reichmuth, Henning Helmers, Simon P. Philipps, Michael Schachtner, Gerald Siefer, Andreas W. Bett   +5 more
openaire   +1 more source