Results 1 to 10 of about 29,139 (290)

Organic laser power converter for efficient wireless micro power transfer

Nature Communications, 2023
Wireless power transfer with collimated power transmission and efficient conversion provides an alternative charging mode for off-grid and portable micro-power electronics. However, charging micro-power electronics with low photon flux can be challenging
Yafei Wang, Zhong Zheng, Jianqiu Wang, Pengqing Bi, Zhihao Chen, Junzhen Ren, Cunbin An, Shaoqing Zhang, Jianhui Hou   +8 more
doaj   +3 more sources

Beaming power: Photovoltaic laser power converters for power-by-light

Joule, 2022
Photovoltaic laser power converters (PVLPCs) are the core element of power-by-light (PBL) systems, which are basically made up of a power laser, an optical fiber, and a PVLPC. PBL allows the safe transfer of power in situations where the direct use of electrical energy to power electronic equipment is either not possible or not recommendable. The first
Carlos Algora, Ivan Garcia, Rafael Pena
exaly   +5 more sources

74.7% Efficient GaAs-Based Laser Power Converters at 808 nm at 150 K

Photonics, 2022
High-efficiency multijunction laser power converters are demonstrated for low temperature applications with an optical input at 808 nm. The photovoltaic power converting III-V semiconductor devices are designed with GaAs absorbing layers, here with 5 ...
Simon Fafard, Denis P. Masson
doaj   +3 more sources

Vertical Multi-Junction Laser Power Converters with 61% Efficiency at 30 W Output Power and with Tolerance to Beam Non-Uniformity, Partial Illumination, and Beam Displacement

Photonics, 2023
Stable and reliable optical power converting devices are obtained using vertical multi-junction laser power converters. They are based on the GaAs and the InP material systems and are used for power-over-fiber or power-beaming applications.
Simon Fafard, Denis Masson
doaj   +3 more sources

Onset of Quantum-Confined Stark Effects in Multijunction Photovoltaic Laser Power Converters Designed with Thin Subcells

Photonics, 2023
Photovoltaic multijunction power-converting III–V semiconductor devices generate electrical power from the optical energy of laser beams. They exhibit conversion efficiencies reaching values greater than 60% and 50% for the GaAs and the InP material ...
Simon Fafard, Denis Masson
doaj   +3 more sources

High-Efficiency and High-Power Multijunction InGaAs/InP Photovoltaic Laser Power Converters for 1470 nm

Photonics, 2022
The high-efficiency capabilities of multijunction laser power converters are demonstrated for high-power applications with an optical input of around 1470 nm. The InP-based photovoltaic power converting III-V semiconductor devices are designed here, with
Simon Fafard, Denis P. Masson
doaj   +3 more sources

Highly Efficient Photovoltaic Laser Power Converters

RUDN Journal of Engineering Research
Photovoltaic conversion of laser radiation has found wide application in fiberoptic communication lines. Energy transfer via a laser beam is also relevant for remote power supply systems on Earth and in space.
Viacheslav M. Andreev, Nikolay A. Kalyuzhnyy, Aleksandra V. Malevskaya, Mariia V. Nakhimovitch, Maxim Z. Shvarts   +4 more
doaj   +2 more sources

A new path towards ultra-high efficient laser power converters: Silicon carbide-based multijunction devices

Results in Engineering
Current high power laser transmission technology faces two major limitations to improve the efficiency of the photovoltaic receivers: the intrinsic entropic losses associated to low bandgap materials (such as GaAs) and the series resistance losses that ...
Javier F. Lozano, Natalia Seoane, Enrique Comesaña, Florencia M. Almonacid, Eduardo F. Fernández, Antonio García-Loureiro   +5 more
doaj   +3 more sources

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

67.5% Efficient InP-Based Laser Power Converters at 1470 nm at 77 K

Photonics
Recent developments in long wavelength and cryogenic laser power converters have unlocked record performances in both areas. Here, devices for an optical input at ~1470 nm are studied for cryogenic applications, combining these cryogenic and long ...
Simon Fafard, Denis Masson
doaj   +3 more sources