Results 11 to 20 of about 1,460,974 (246)

Quantum modeling of semiconductor gain materials and vertical-external-cavity surface-emitting laser systems [PDF]

, 2010
This article gives an,overview of the microscopic theory,theory used to quantitatively model a wide range of semiconductor laser gain materials. As a snapshot of the current state of research, applications to a variety of actual quantum-well systems are ...
Rubel, Oleg, Hader, Joerg, Moloney, Jerome V., Ackemann, Thorsten, Zhang, Wei, Kuehn, Eckhard, Imhof, Sebastian, Koch, Stephan W., Schlichenmaier, Christoph, Thraenhardt, Angela, Bueckers, Christina   +10 more
core   +4 more sources

Bifurcation analysis of a semiconductor laser with filtered optical feedback [PDF]

, 2006
We study the dynamics and bifurcations of a semiconductor laser with delayed filtered feedback, where a part of the output of the laser re-enters after spectral filtering.
Erzgraeber, H., Krauskopf, B., Erzgraeber, H, Lenstra, D., Bernd Krauskopf, H. Erzgraber, Lenstra, D, Erzgraber, H, Krauskopf, B, Daan Lenstra   +9 more
core   +1 more source

Optical trapping with superfocused high-M2 laser diode beam [PDF]

, 2015
Many applications of high-power laser diodes demand tight focusing. This is often not possible due to the multimode nature of semiconductor laser radiation possessing beam propagation parameter M2 values in double-digits.
Kuchinskii, V. I., S. N. Loseva, Deryagin, A. G., M. Farsarib, Soboleva, K.K., V. V. Dudelev, W. Sibbett, Rafailov, E. U., Dudelev, V. V., Melissinaki, V., Deryagin, A.G., V. V. Dudeleva, Sobolev, K. K., K. K. Soboleva, V. Melissinaki, Kuchinskii, V.I., A. G. Deryagin, V. I. Kuchinskiia, Rafailov, E.U., G. S. Sokolovskii, Losev, S.N., A. G. Deryagina, V. I. Kuchinskii, M. Farsari, K. K. Sobolevac, Sokolovskii, G.S., V. Melissinakib, W. Sibbette, G. S. Sokolovskiia, Sokolovskii, G. S., Dudelev, V.V., E. U. Rafailov, Farsari, M., Losev, S. N., Sibbett, W., E. U. Rafailovf, S. N. Losev   +36 more
core   +1 more source

Efficacy of laser preionization with a semiconductor source and propene addition [PDF]

, 1984
It is established that propene is an effective additive instabilising uv preionised CO2 TEA laser discharges: its effect being particularly pronounced with semiconductor-edge preionised lasers where the preionisation levels are shown to be ...
Scott, S.J., Smith, A.L.S.
core   +4 more sources

Effect of carrier confinement on effective mass of excitons and estimation of ultralow disorder in Al x Ga1−x As/GaAs quantum wells by magneto-photoluminescence

Scientific Reports, 2017
Effect of charge carrier confinement and ultra-low disorder acquainted in AlGaAs/GaAs multi-quantum well system is investigated via Magneto-photoluminescence spectroscopy.
S. Haldar, V. K. Dixit, Geetanjali Vashisht, Shailesh Kumar Khamari, S. Porwal, T. K. Sharma, S. M. Oak   +6 more
doaj   +1 more source

Improved Optical Property and Lasing of ZnO Nanowires by Ar Plasma Treatment

Nanoscale Research Letters, 2019
ZnO nanowires play a very important role in optoelectronic devices due to the wide bandgap and high exciton binding energy. However, for one-dimensional nanowire, due to the large surface to volume ratio, surface traps and surface adsorbed species acts ...
Haolin Li, Jilong Tang, Fengyuan Lin, Dengkui Wang, Dan Fang, Xuan Fang, Weizhen Liu, Rui Chen, Zhipeng Wei   +8 more
doaj   +1 more source

Re-analysis of single-mode conditions for thin-film lithium niobate rib waveguides

Results in Physics, 2021
Single-mode waveguide devices are necessary in photonic integrated circuits. Previous studies on the single-mode conditions (SMCs) of the thin film lithium niobate (TFLN) either only focus on wire waveguide, or lack comprehensive discussions on the ...
Ying Li, Tian Lan, Dengcai Yang, Zhiyong Wang   +3 more
doaj   +1 more source

Hot Carrier Photocurrent through MOS Structure

Applied Sciences, 2021
Flow of photocurrent through the metal-oxide-semiconductor structure induced by the pulsed infrared CO2 laser is investigated experimentally. In the case of a perfect insulator, the photocurrent has a photocapacitive character.
Jonas Gradauskas, Steponas Ašmontas
doaj   +1 more source

The use of semiconductor laser diodes at low temperatures [PDF]

Vestnik MGTU, 2016
The theoretical analysis and experimental research of possibility of using commercially available semiconductor laser diodes at low temperatures (down to the temperature of 50 K) has been performed in the paper.
Vlasova S. V. , Petrov V. V. , Shapochkin P. Yu.   +2 more
doaj   +1 more source

Possible explanations for different surface quality in laser cutting with 1 micron and 10 microns beams [PDF]

, 2012
In laser　cutting　of　thick　steel　sheets,　quality　difference　is　observed　between　cut　surfaces　obtained　with 1 micron and 10 micron laser beams. This paper investigates physical mechanisms for this interesting and important problem of the wavelength ...
Remy Fabbro, Koji Hirano, FABBRO, Rémy, HIRANO, Koji   +3 more
core   +1 more source