Results 21 to 30 of about 263,472 (374)

An Analysis of the Photo-Thermoelastic Waves Due to the Interaction between Electrons and Holes in Semiconductor Materials under Laser Pulses

Mathematics, 2022
In this paper, the interaction between holes and electrons in semiconductor media is analyzed based on the existing mathematical–physical model. The elasto-thermodiffusion (ETD) theory, according to photothermal (PT) transport processes, has been used to
Hashim M. Alshehri, Khaled Lotfy
doaj   +1 more source

Stable pulsed laser diode driver for rangefinder [PDF]

Biuletyn 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, Marek Zygmunt, Michał Muzal, Andrzej Młodzianko   +3 more
doaj   +1 more source

Bifurcation-Cascade Diagrams of an External-Cavity Semiconductor Laser: Experiment and Theory

IEEE Journal of Quantum Electronics, 2014
Byungchil Kim, Alexandre Locquet, Nianqiang Li, Daeyoung Choi, D. S. Citrin   +4 more
openalex   +3 more sources

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

Mathematics, 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, Kh. Lotfy, Alaa A. El-Bary, Jawdat Alebraheem, Mogtaba A. Y. Mohammed   +4 more
doaj   +1 more source

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

Журнал 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

IEEE 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, Zhuo Wang, Lu Yu, Xiaolin Ning, Wei Quan, Yueyang Zhai   +5 more
doaj   +1 more source

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

New 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, Natasha Tomm, Nadia O Antoniadis, Alistair J Brash, Rüdiger Schott, Sascha R Valentin, Andreas D Wieck, Arne Ludwig, Richard J Warburton   +8 more
doaj   +1 more source

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

Optics 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, Chao Chen, Y. Ning, Xing Zhang, Cheng Qiu, Jia-qi Chen, Xiaojie Yin, L. Qin, Li-Jun Wang   +8 more
semanticscholar   +1 more source

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

Crystals, 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, Weaam Alhejaili, Khaled Lotfy, Alaa A. El-Bary   +3 more
doaj   +1 more source

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

Photonics, 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, Wei Shi, Cheng Ma, Zhiyuan Chen, Hui Liu   +4 more
doaj   +1 more source