Results 41 to 50 of about 2,791,273 (292)
Deep Ultraviolet CMOS-Controlled Micro Light-Emitting Diode Array
IEEE Photonics Journal, 2023 We report a Deep Ultraviolet (DUV) AlGaN micro-light emitting diode (micro-LED) array driven by a matching array of electronic drivers implemented in Complementary Metal-Oxide-Semiconductor (CMOS) technology.
Jonathan J. D. McKendry +7 more
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Deep ultraviolet diamond Raman laser
Optics Express, 2011 We present a synchronously pumped diamond Raman laser operating at 275.7 nm pumped by the 4th harmonic of a mode locked Nd:YVO4 laser. The laser had a threshold pump pulse energy of 5.8 nJ and generated up to 0.96 nJ pulses at 10.3% conversion efficiency.
Eduardo, Granados +2 more
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Superlattice Structure for High Performance AlGaN Deep Ultraviolet LEDs
PhotonicsThis study presents a novel approach to mitigate electron overflow in deep ultraviolet (UV) AlGaN light-emitting diodes (LEDs) by integrating engineered quantum barriers (QBs) with a concave shape and an optimized AlGaN superlattice (SL) electron ...
Mano Bala Sankar Muthu +3 more
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Ammonia Distribution Measurement on a Hot Gas Test Bench Applying Tomographical Optical Methods
Sensors, 2019 Measuring the distribution of gas concentration is a very common problem in a variety of technological fields. Depending on the detectability of the gas, as well as the technological progress of the sector, different methods are used.
Bernhard Fischbacher +2 more
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Status of Growth of Group III-Nitride Heterostructures for Deep Ultraviolet Light-Emitting Diodes
Crystals, 2017 We overview recent progress in growth aspects of group III-nitride heterostructures for deep ultraviolet (DUV) light-emitting diodes (LEDs), with particular emphasis on the growth approaches for attaining high-quality AlN and high Al-molar fraction AlGaN.
Kai Ding +3 more
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DEEP ULTRAVIOLET LIGHT EMITTING DIODES (DUV LEDS) [PDF]
Journal of Engineering Science (Chişinău), 2018 There are a variety of applications for devices that extend into the deep-UV, including biological agent detection and optical storage. The nitride material system is a set of semiconducting compounds that have wavelengths that span a broad ...
Băjenescu, Titu-Marius I.
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Design of Double-Lattice Photonic Crystal of DUV Laser by ANN-RBF Neural Network
OpticsIn this study, a double-lattice photonic crystal structure was designed to achieve deep ultraviolet lasing without the use of any Distributed Bragg Reflector (DBR), which is called a photonic-crystal surface-emitting laser (PCSEL).
Bochao Zhang +7 more
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An Amorphous (Al0.12Ga0.88)2O3 Deep Ultraviolet Photodetector
IEEE Photonics Journal, 2020 The authors report the deposition of an (AlxGa1-x)2O3 amorphous thin film on sapphire substrates by sputter deposition. An amorphous deep ultraviolet (UV) (Al0.12Ga0.88)2O3 photodetector, with a cutoff wavelength at 230 nm, was also fabricated.
Shu-Bai Liu +3 more
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, 2019 Fascinating optical properties governed by extremely confined excitons have been so far observed in 2D crystals like monolayers of transition metal dichalcogenides. These materials, however, are limited for production by epitaxial methods.
T. V. Shubina +23 more
core +1 more source
Shaped ultrafast laser pulses in the deep ultraviolet
Optics Express, 2007 We use an acousto-optic pulse shaper to directly control the phase and amplitude of femtosecond laser pulses in the deep ultraviolet (~ 260 nm). The efficiency of the pulse shaper is 21% and the output pulse energy is 2.8muJ. We are currently using these pulses in molecular coherent control experiments.
Brett J, Pearson, Thomas C, Weinacht
openaire +2 more sources