Results 11 to 20 of about 29,139 (290)

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

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

Power and Spectral Range Characteristics for Optical Power Converters

Energies, 2021
High-performance optical power converters (OPCs) enable isolated electrical power and power beaming applications at new wavelengths and higher output powers.
Simon Fafard, Denis Masson, Jan-Gustav Werthen, James Liu, Ta-Chung Wu, Christian Hundsberger, Markus Schwarzfischer, Gunther Steinle, Christian Gaertner, Claudio Piemonte, Bernd Luecke, Josef Wittl, Martin Weigert   +12 more
doaj   +1 more source

AlGaAs converters and arrays for laser power beaming [PDF]

AIP Conference Proceedings, 2015
This study reports on the development of AlGaAs/GaAs-based laser power photovoltaic (PV) converters fabricated by LPE. The monochromatic (λ = 809 nm) conversion efficiency up to 58% is measured for cells with p-n junction in Al0.07Ga0.93As and low (x = 0.25-0.3) Al concentration ‘window’.
Vladimir Khvostikov, Svetlana Sorokina, Nataliia Potapovich, Olga Khvostikova, Maxim Shvarts, Nailya Timoshina, Viacheslav Andreev   +6 more
openaire   +1 more source

High power diode lasers converted to the visible [PDF]

2017 IEEE High Power Diode Lasers and Systems Conference (HPD), 2017
High power diode lasers have in recent years become available in many wavelength regions. However, some spectral regions are not well covered. In particular, the visible spectral range is lacking high power diode lasers with good spatial quality. In this paper, we highlight some of our recent results in nonlinear frequency conversion of high power near
Jensen, Ole Bjarlin, Hansen, Anders Kragh, Andersen, Peter E., Christensen, Mathias, Müller, André, Tawfieq, Mahmoud, Sumpf, Bernd, Petersen, Paul Michael   +7 more
openaire   +3 more sources