Results 1 to 10 of about 36,563 (205)

AlGaAs Nonlinear Integrated Photonics

open access: yesMicromachines, 2022
Practical applications implementing integrated photonic circuits can benefit from nonlinear optical functionalities such as wavelength conversion, all-optical signal processing, and frequency-comb generation, among others.
Ehsan Mobini   +3 more
doaj   +3 more sources

Optimising (Al,Ga) (As,Bi) Quantum Well Laser Structures for Reflectance Mode Pulse Oximetry [PDF]

open access: yesMicromachines
We explore quantum well laser diodes for applications in pulse oximetry based on two material systems, namely, classical AlGaAs and a rather exotic GaAsBi, with lasing at around 800 nm and 1100 nm, respectively.
Aivaras Špokas   +11 more
doaj   +2 more sources

Determination of electrical and thermal parameters of vertical-cavity surface-emitting lasers [PDF]

open access: yesMetrology and Measurement Systems, 2023
Experimental methods are presented for determining the thermal resistance of vertical-cavity surfaceemitting lasers (VCSELs) and the lateral electrical conductivity of their p-type semiconductor layers.
Patrycja Śpiewak   +8 more
doaj   +1 more source

Near-infrared photoluminescence in n-GaAs/AlGaAs quantum wells with different locations of compensating acceptor impurity

open access: yesSt. Petersburg Polytechnical University Journal: Physics and Mathematics, 2022
In the paper, comparative studies of near-IR photoluminescence (PL) in structures with GaAs/AlGaAs quantum wells possessing different selective doping profiles have been performed.
Adamov Roman   +7 more
doaj   +1 more source

Temperature Dependence of Carrier Extraction Processes in GaSb/AlGaAs Quantum Nanostructure Intermediate-Band Solar Cells

open access: yesNanomaterials, 2021
From the viewpoint of band engineering, the use of GaSb quantum nanostructures is expected to lead to highly efficient intermediate-band solar cells (IBSCs).
Yasushi Shoji   +2 more
doaj   +1 more source

Supercontinuum generation in dispersion engineered AlGaAs-on-insulator waveguides

open access: yesScientific Reports, 2021
The effect of engineering the dispersion of AlGaAs-on-insulator (AlGaAs-OI) waveguides on supercontinuum generation is investigated at telecom wavelengths.
Stuart May, Matteo Clerici, Marc Sorel
doaj   +1 more source

Dual gate material (Au and Pt) based double-gate MOSFET for high-speed devices

open access: yesTecnología en Marcha, 2021
Aluminium Gallium Arsenide (AlGaAs) is a semiconductor material used in the latest design of double heterostructure laser diodes. This semiconductor is mostly available in the arbitrary alloy form between Gallium Arsenide and Aluminium Arsenide.
Naveenbalaji Gowthaman   +1 more
doaj   +1 more source

Second-Harmonic Generation in Suspended AlGaAs Waveguides: A Comparative Study

open access: yesMicromachines, 2020
Due to adjustable modal birefringence, suspended AlGaAs optical waveguides with submicron transverse sections can support phase-matched frequency mixing in the whole material transparency range, even close to the material bandgap, by tuning the width-to ...
Iännis Roland   +6 more
doaj   +1 more source

Compositional modulation in AlxGa1−xAs epilayers grown by molecular beam epitaxy on the (111) facets of grooves in a nonplanar substrate [PDF]

open access: yes, 1989
We report the first observation of a lateral junction formed in an alloy due to an abrupt transition from segregated to random AlGaAs alloy compositions.
Chen, Howard Z.   +3 more
core   +1 more source

Optimization of GaAs Nanowire Pin Junction Array Solar Cells by Using AlGaAs/GaAs Heterojunctions

open access: yesNanoscale Research Letters, 2018
We optimized the performance of GaAs nanowire pin junction array solar cells by introducing AlGaAs/GaAs heterejunctions. AlGaAs is used for the p type top segment for axial junctions and the p type outer shell for radial junctions.
Yao Wu   +5 more
doaj   +1 more source

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