Results 21 to 30 of about 171,689 (340)

SILICON SURFACE MICROSTRUCTURING BY SINGLE-EXPOSURE FEMTOSECOND DOUBLE LASER PULSE [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2019
Subject of Research. The paper evaluates the possibility of periodic microstructures formation on the silicon surface by single-exposure double femtosecond laser pulse. Method.
E. V. Kuzmin   +3 more
doaj   +1 more source

Stable pulsed laser diode driver for rangefinder [PDF]

open access: yesBiuletyn Wojskowej Akademii Technicznej, 2014
This article presents comparison of methods of driving pulse laser diodes. Based on theresults of shown analyses, the new design of pulse laser diode driver, using MOSFET transistor, wasdeveloped.
Marcin Jakubaszek   +3 more
doaj   +1 more source

Microelongated Thermo-Elastodiffusive Waves of Excited Semiconductor Material under Laser Pulses Impact

open access: yesMathematics, 2023
The current study focuses on one-dimensional (1D) deformation in an excited microelongated semiconductor medium impacted by optoelectronics with exponential laser-pulsed heat.
Ismail M. Tayel   +4 more
doaj   +1 more source

The Spectrum of Transverse Acoustic Phonons in Planar Multilayer Semiconductor Nanostructures [PDF]

open access: yesЖурнал нано- та електронної фізики, 2016
Based on the elastic continuum model, the theory of displacement of acoustic phonons spectra, arising in flat semiconductor nanostructures, was developed.
I.V. Boyko, A.M. Gryschuk
doaj   +1 more source

Intelligent Modeling for Transfer Function Control of DBR Semiconductor Laser at Near-Working Point

open access: yesIEEE Access, 2020
In this paper, a novel intelligent modeling method for transfer function control of DBR semiconductor lasers at near-working point is proposed, which is based on the quantum particle swarm optimization (QPSO) algorithm.
Xiufei Li   +5 more
doaj   +1 more source

Cavity-enhanced excitation of a quantum dot in the picosecond regime

open access: yesNew Journal of Physics, 2023
A major challenge in generating single photons with a single emitter is to excite the emitter while avoiding laser leakage into the collection path. Ideally, any scheme to suppress this leakage should not result in a loss in the efficiency of the single ...
Alisa Javadi   +8 more
doaj   +1 more source

High linear polarization, narrow linewidth hybrid semiconductor laser with an external birefringence waveguide Bragg grating.

open access: yesOptics Express, 2021
We demonstrate a high linear polarization, narrow linewidth hybrid laser composed of a semiconductor gain chip and a high birefringence waveguide Bragg grating (WBG).
Xi-chen Luo   +8 more
semanticscholar   +1 more source

Excited Non-Local Microelongated Semiconductor Layer Thermal-Optical Mechanical Waves Affected by Rotational Field

open access: yesCrystals, 2023
The main goal of this research is to provide a novel model that describes an optically heated layer of an excited non-local microelongated semiconductor material. In a rotating field, the model is examined as the photo-excitation processes occur.
Shreen El-Sapa   +3 more
doaj   +1 more source

Underwater power compensated white light source based on synthetic white laser

open access: yesHeliyon, 2023
The semiconductor white laser light source is used as a light source for underwater illumination. The required standard color temperature of white light is obtained at the underwater target surface.
Wei-Yu Cai   +6 more
doaj   +1 more source

Pulse Width Control Based on Blumlein Pulse Forming Line and SI-GaAs PCSS

open access: yesPhotonics, 2023
In this paper, the output electrical pulse width of semi-insulating gallium arsenide photoconductive semiconductor switch (SI-GaAs PCSS) is controlled by means of Blumlein pulse formation line.
Meilin Wu   +4 more
doaj   +1 more source

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