Results 21 to 30 of about 28,721 (300)
High-Efficiency Pulse Width Modulation-Based Wireless Laser Power Transmission Step-Down System
IEEE Photonics Journal, 2020 Wireless laser power transmission is a promising technique in the far-field wireless power supply with the advantages of high-power density, and small transmitter and receiver sizes.
Yunshi Wang +4 more
doaj +1 more source
A Lunar-Orbiting Satellite Constellation for Wireless Energy Supply
Aerospace, 2023 The goal of this research is to define a lunar-orbiting system that provides power to the lunar surface through wireless power transmission. To meet the power demand of a lunar base, a constellation of satellites placed in stable orbits is used.
Francesco Lopez +5 more
doaj +1 more source
Electron cyclotron converters of microwaves in wireless power transmission systems
RUDN Journal of Engineering Research, 2020 A proposal to use special electron cyclotron devices as effective converters of electromagnetic waves into direct current in modern microwave systems for wireless transmission of electrical energy to the Earth via a microwave channel from solar space ...
Yury A. Pirogov +2 more
doaj +1 more source
Wavelength conversion for WDM communication systems using four-wavemixing in semiconductor optical amplifiers [PDF]
, 1997 Four-wave mixing (FWM) in semiconductor optical amplifiers is an attractive mechanism for wavelength conversion in wavelength-division multiplexed (WDM) systems since it provides modulation format and bit rate transparency over wide tuning ranges.
Geraghty, David F. +5 more
core +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 +6 more
openaire +1 more source
High-performance laser power converts for wireless information transmission applications
Optics Express, 2023 Laser Power Converters (LPCs) are components of the laser wireless power transmission (LWPT) system receiving laser power. This paper proposes a comprehensive test method that employs continuous, pulse-pause, and short-time techniques to evaluate the performance of six-junction GaAs LPCs operating with an optical input at 808 nm.
Yudan Gou +7 more
openaire +2 more sources
Cascaded wavelength conversion by four-wave mixing in a strained semiconductor optical amplifier at 10 Gb/s [PDF]
, 1997 We demonstrate for the first time cascaded wavelength conversion by four-wave mixing in a semiconductor optical amplifier. Bit-error-rate performance of
Geraghty, David F. +5 more
core +1 more source
Time interleaved optical sampling for ultra-high speed A/D conversion [PDF]
, 1998 A scheme is proposed for increasing the sampling rate of analogue-to-digital conversion by more than an order of magnitude by combining state-of-the-art A/D converters with photonic technology.
Koumans, R. G. M. P., Yariv, A.
core +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 +5 more
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Energetic Materials Frontiers, 2020 Graphene-based materials have been extensively investigated as light converters for photothermal therapy, energy harvesting, and laser ignition owing to their good light absorption and high thermal conductivity.
Jing Liu +6 more
doaj +1 more source