Results 21 to 30 of about 994 (138)

Extremely Ultranarrow Linewidth Based on Low-Symmetry Al Nanoellipse Metasurface

open access: yesNanomaterials, 2022
Plasmonic nanostructures with ultranarrow linewidths are of great significance in numerous applications, such as optical sensing, surface-enhanced Raman scattering (SERS), and imaging.
Liangyu Wang   +3 more
doaj   +1 more source

A compact portable photoacoustic sensor for sub-ppm level SO2 detection with a DUV-LED and a non-resonant photoacoustic cell

open access: yesFrontiers in Physics, 2023
A photoacoustic module based on a novel 273 nm deep-ultraviolet light-emitting diode (DUV-LED) was developed for sulfur dioxide (SO2) detection. The DUV-LED with an emission angle of 60° emitted a power of 10 mW.
Yujing Jing   +11 more
doaj   +1 more source

Deep-ultraviolet free-electron laser (DUV-FEL) at Brookhaven National Laboratory [PDF]

open access: yesSPIE Proceedings, 2000
Brookhaven National Laboratory has established an initiative in FEL science and technology development which includes the Deep Ultra-Violet Free Electron Laser (DUV-FEL) experiment. It is configured as a sub-harmonically seeded High Gain Harmonic Generator (HGHG) to improve coherence and pulse control as contrasted with other schemes that start up from
Erik D. Johnson   +8 more
openaire   +1 more source

A 206-nm all-solid-state deep-ultraviolet laser with 291 MW peak power

open access: yesFrontiers in Physics, 2023
We successfully demonstrate the generation of an all-solid-state deep-ultraviolet (DUV) laser at 206 nm through the fifth (4 + 1)-harmonic generation using a 197-W, 10-kHz, 1.2-ps, 1,030-nm Yb:YAG laser. The DUV laser delivers 180 μJ–582 fs pulses with a
Qiandong Ran   +4 more
doaj   +1 more source

Greatly Enhanced Wall-Plug Efficiency of N-polar AlGaN-Based Deep Ultraviolet Light-Emitting Diodes

open access: yesIEEE Photonics Journal, 2021
In this work, we numerically investigate the N-polar AlGaN-based deep ultraviolet light-emitting diodes (DUV LEDs) over the Ga-polar DUV LEDs. The light output power has increased from 7.1 mW of Ga-polar DUV LED to 18.8 mW of N-polar DUV LED at 60 mA ...
Hongchang Tao   +4 more
doaj   +1 more source

Deep Ultraviolet Photodetector: Materials and Devices

open access: yesCrystals, 2023
The application of deep ultraviolet detection (DUV) in military and civil fields has increasingly attracted the attention of researchers’ attention.
Wannian Fang   +8 more
doaj   +1 more source

Solar-Blind Optical Wireless Communications Over 80 Meters Using a 265-nm High-Power Single-Chip DUV-LED Over 500 mW in Sunlight

open access: yesIEEE Photonics Journal, 2023
Direct eye-pattern measurements based on a deep-ultraviolet (DUV) light emitting diode (LED) optical wireless communication system were performed in sunlight.
Hiroyuki Kurosawa   +3 more
doaj   +1 more source

Nanophotonic crystals on unpolished sapphire substrates for deep-UV light-emitting diodes

open access: yesScientific Reports, 2021
A new method has been established and employed to create a random nanophotonic crystal (NPhC) structure without photolithography on the unpolished side of a single-side-polished sapphire substrate.
Tinh Binh Tran   +2 more
doaj   +1 more source

Some Measures for COVID-19 Including Deep Ultraviolet Light-Emitting Diode (DUV-LED), Gc protein-derived Macrophage-Activating Factor (Gcmaf), and 5-Aminolevulinic Acid (5-ALA) [PDF]

open access: yesAsploro Journal of Biomedical and Clinical Case Reports, 2021
Several trials for the COVID-19 pandemic are found. Prof. Shunji Nakamura, Tokushima University was awarded the 2014 Nobel prize in Physics for light-emitting diodes (LEDs). Deep ultraviolet LED (DUV-LED) causes SARS-CoV-2 inactivation as 99.9% by 265 nm.
openaire   +1 more source

A Novel Liquid Packaging Structure of Deep-Ultraviolet Light-Emitting Diodes to Enhance the Light-Extraction Efficiency

open access: yesCrystals, 2019
To realize high-efficiency, AlGaN-based, deep-ultraviolet light-emitting diodes (DUV-LEDs), enhancing their light-extraction efficiency and reducing thermal resistance is very crucial.
Chieh-Yu Kang   +5 more
doaj   +1 more source

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