Magnetic field effects on THz quantum cascade laser: A comparative analysis of three and four quantum well based active region design
Аутори
Daničić, AleksandarRadovanović, Jelena V.
Milanović, Vitomir B.
Indjin, Dragan
Ikonić, Zoran
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
We consider the influence of additional carrier confinement, achieved by application of strong perpendicular magnetic field, on inter Landau levels electron relaxation rates and the optical gain, of two different GaAs quantum cascade laser structures operating in the terahertz spectral range. Breaking of the in-plane energy dispersion and the formation of discrete energy levels is an efficient mechanism for eventual quenching of optical phonon emission and obtaining very long electronic lifetime in the relevant laser state. We employ our detailed model for calculating the electron relaxation rates (due to interface roughness and electron-longitudinal optical phonon scattering), and solve a full set of rate equations to evaluate the carrier distribution over Landau levels. The numerical simulations are performed for three- and four-well (per period) based structures that operate at 3.9 THz and 1.9 THz, respectively, both implemented in GaAs/Al0.15Ga0.85As. Numerical results are presente...d for magnetic field values from 1.5 T up to 20 T, while the band nonparabolicity is accounted for. (C) 2016 Elsevier B.V. All rights reserved.
Кључне речи:
Quantum Cascade Laser / Quantum well / Magnetic fieldИзвор:
Physica E: Low-dimensional Systems and Nanostructures, 2016, 81, 275-280Издавач:
- Elsevier
Финансирање / пројекти:
- Фотоника микро и нано структурних материјала (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45010)
- NATO SfP Grant [984068], MPNS COST ACTION [MP1204-TERA-MIR], BMBS COST Action [BM1205]
DOI: 10.1016/j.physe.2016.03.019
ISSN: 1386-9477; 1873-1759
WoS: 000377228700041
Scopus: 2-s2.0-84962081665
Колекције
Институција/група
VinčaTY - JOUR AU - Daničić, Aleksandar AU - Radovanović, Jelena V. AU - Milanović, Vitomir B. AU - Indjin, Dragan AU - Ikonić, Zoran PY - 2016 UR - https://vinar.vin.bg.ac.rs/handle/123456789/1102 AB - We consider the influence of additional carrier confinement, achieved by application of strong perpendicular magnetic field, on inter Landau levels electron relaxation rates and the optical gain, of two different GaAs quantum cascade laser structures operating in the terahertz spectral range. Breaking of the in-plane energy dispersion and the formation of discrete energy levels is an efficient mechanism for eventual quenching of optical phonon emission and obtaining very long electronic lifetime in the relevant laser state. We employ our detailed model for calculating the electron relaxation rates (due to interface roughness and electron-longitudinal optical phonon scattering), and solve a full set of rate equations to evaluate the carrier distribution over Landau levels. The numerical simulations are performed for three- and four-well (per period) based structures that operate at 3.9 THz and 1.9 THz, respectively, both implemented in GaAs/Al0.15Ga0.85As. Numerical results are presented for magnetic field values from 1.5 T up to 20 T, while the band nonparabolicity is accounted for. (C) 2016 Elsevier B.V. All rights reserved. PB - Elsevier T2 - Physica E: Low-dimensional Systems and Nanostructures T1 - Magnetic field effects on THz quantum cascade laser: A comparative analysis of three and four quantum well based active region design VL - 81 SP - 275 EP - 280 DO - 10.1016/j.physe.2016.03.019 ER -
@article{ author = "Daničić, Aleksandar and Radovanović, Jelena V. and Milanović, Vitomir B. and Indjin, Dragan and Ikonić, Zoran", year = "2016", abstract = "We consider the influence of additional carrier confinement, achieved by application of strong perpendicular magnetic field, on inter Landau levels electron relaxation rates and the optical gain, of two different GaAs quantum cascade laser structures operating in the terahertz spectral range. Breaking of the in-plane energy dispersion and the formation of discrete energy levels is an efficient mechanism for eventual quenching of optical phonon emission and obtaining very long electronic lifetime in the relevant laser state. We employ our detailed model for calculating the electron relaxation rates (due to interface roughness and electron-longitudinal optical phonon scattering), and solve a full set of rate equations to evaluate the carrier distribution over Landau levels. The numerical simulations are performed for three- and four-well (per period) based structures that operate at 3.9 THz and 1.9 THz, respectively, both implemented in GaAs/Al0.15Ga0.85As. Numerical results are presented for magnetic field values from 1.5 T up to 20 T, while the band nonparabolicity is accounted for. (C) 2016 Elsevier B.V. All rights reserved.", publisher = "Elsevier", journal = "Physica E: Low-dimensional Systems and Nanostructures", title = "Magnetic field effects on THz quantum cascade laser: A comparative analysis of three and four quantum well based active region design", volume = "81", pages = "275-280", doi = "10.1016/j.physe.2016.03.019" }
Daničić, A., Radovanović, J. V., Milanović, V. B., Indjin, D.,& Ikonić, Z.. (2016). Magnetic field effects on THz quantum cascade laser: A comparative analysis of three and four quantum well based active region design. in Physica E: Low-dimensional Systems and Nanostructures Elsevier., 81, 275-280. https://doi.org/10.1016/j.physe.2016.03.019
Daničić A, Radovanović JV, Milanović VB, Indjin D, Ikonić Z. Magnetic field effects on THz quantum cascade laser: A comparative analysis of three and four quantum well based active region design. in Physica E: Low-dimensional Systems and Nanostructures. 2016;81:275-280. doi:10.1016/j.physe.2016.03.019 .
Daničić, Aleksandar, Radovanović, Jelena V., Milanović, Vitomir B., Indjin, Dragan, Ikonić, Zoran, "Magnetic field effects on THz quantum cascade laser: A comparative analysis of three and four quantum well based active region design" in Physica E: Low-dimensional Systems and Nanostructures, 81 (2016):275-280, https://doi.org/10.1016/j.physe.2016.03.019 . .