Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Grzegorz Hałdaś"'
Publikováno v:
Sensors, Vol 23, Iss 1, p 389 (2022)
Numerical research into the QCL tunability aspects in respect to being applied in chemical substance detection systems is covered in this paper. The QCL tuning opportunities by varying power supply conditions and geometric dimensions of the active ar
Externí odkaz:
https://doaj.org/article/e3d4881044794f30bb5e6a8954348b21
Autor:
Grzegorz Hałdaś, Andrzej Kolek
Publikováno v:
Optics express. 30(7)
Non-equilibrium Green’s function (NEGF) formalism is used to optimize the gain region of a quantum cascade laser (QCL) tailored to emit radiation at ∼5 µm wavelength, originally designed by Evans et al. [Appl. Phys. Lett., 88, 051105(2006)10.106
Autor:
Andrzej Kolek, Grzegorz Hałdaś, Piotr Gutowski, Grzegorz Sobczak, Dorota Pierścińska, Maciej Bugajski
Publikováno v:
Physical Review Applied. 17
Autor:
Grzegorz Hałdaś
Publikováno v:
Journal of Computational Electronics. 18:1400-1406
The non-equilibrium Green’s function formalism method is used to simulate electronic transport in a quantum cascade laser. Calculations are performed in a real-space basis defined by the grid points. Implementation of a non-uniform mesh greatly imp
Publikováno v:
Optical and Quantum Electronics. 51
Nonequilibrium Green’s function method is used to calculate electronic and optical characteristics of various quantum cascade structures emitting light at ~ 5.2 μm wavelength. Basing on these simulations, the choice of optimal design can be done.
Autor:
Maciej Bugajski, Kamil Pierściński, Piotr Gutowski, Grzegorz Hałdaś, Andrzej Kolek, Dorota Pierścińska
Publikováno v:
Applied Physics B. 124
Tuning the wavelength of emitted radiation is a tremendous feature of quantum cascade lasers which enables their use in various applications. Usually, this tuning is executed by the change of the bias current or the temperature. In this paper, it is
Autor:
J. Kubacka-Traczyk, Anna Szerling, W. Meredith, Piotr Gutowski, Artur Trajnerowicz, Krzysztof J. Kurzydłowski, Kamil Pierściński, Maciej Bugajski, Piotr Karbownik, Thomas J. Slight, Iwona Sankowska, Kamil Kosiel, Grzegorz Hałdaś, Andrzej Kolek, Dorota Pierścińska, Justyna Grzonka
Publikováno v:
physica status solidi (b). 251:1144-1157
In this paper, we report the results of investigation of 9.5 µm AlGaAs/GaAs and strain compensated 4.7 µm AlInAs/InGaAs/InP QCLs. We also show the results for 9.5 µm lasers based on lattice matched AlInAs/InGaAs/InP structures. The developed GaAs/
Autor:
Piotr Karbownik, Kamil Pierściński, Grzegorz Hałdaś, Maciej Bugajski, Andrzej Kolek, Dorota Pierścińska, Piotr Gutowski
Publikováno v:
Optical and Quantum Electronics. 49
Non-equilibrium Green’s function method is used to analyze electronic transport in a mid-infrared quantum cascade laser on microscopic level. Basing on the excellent agreement found between calculated and experimental data, the conclusions are deri
Autor:
Piotr Gutowski, Iwona Sankowska, Jaroslaw Mizera, Maciej Bugajski, Justyna Grzonka, Andrzej Kolek, Dorota Pierścińska, Grzegorz Hałdaś, Kamil Pierściński
Publikováno v:
Semiconductor Science and Technology. 33:035006
Publikováno v:
physica status solidi (b). 230:253-257
The phenomenon of superlocalization has been studied by means of numerical simulations performed on two-dimensional percolation cluster at the threshold site concentration p = p c = 0.593. It is shown that superlocalization takes place also for the s