TY  - JOUR
AU  - Daničić, Aleksandar
AU  - Radovanović, Jelena V.
AU  - Milanović, Vitomir B.
AU  - Indjin, Dragan
AU  - Ikonić, Zoran
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3874
AB  - We explore the possibilities of using advanced tools for global optimization, namely the genetic algorithm, to obtain structural parameters of gain-maximized quantum cascade laser (QCL) emitting at specified wavelengths, suitable for detection of pollutant gasses, such as SO(2), HNO(3), CH(4) and NH(3), in the ambient air. Upon completing this initial optimization stage, we introduce a strong external magnetic field perpendicular to the epitaxial layers, to fine tune the laser output properties. This magnetic field alters the electron energy spectrum by splitting the continuous energy subbands into discrete Landau levels whose arrangement influences the magnitude of the optical gain. In addition, strong effects of band nonparabolicity result in subtle changes in the lasing wavelength at magnetic fields which maximize the gain, thus allowing us to explore the prospects of multi-wavelength emission of the given structure, and achieving resonance with additional compounds, absorbing at wavelengths close to the original one. Numerical results are presented for GaAs/Al(x)Ga(1-x) As based QCL structures designed for operation in the mid-infrared part of the spectrum.
T2  - Journal of Physics. D: Applied Physics
T1  - Optimization and magnetic-field tunability of quantum cascade laser for applications in trace gas detection and monitoring
VL  - 43
IS  - 4
DO  - 10.1088/0022-3727/43/4/045101
ER  - 

@article{
author = "Daničić, Aleksandar and Radovanović, Jelena V. and Milanović, Vitomir B. and Indjin, Dragan and Ikonić, Zoran",
year = "2010",
abstract = "We explore the possibilities of using advanced tools for global optimization, namely the genetic algorithm, to obtain structural parameters of gain-maximized quantum cascade laser (QCL) emitting at specified wavelengths, suitable for detection of pollutant gasses, such as SO(2), HNO(3), CH(4) and NH(3), in the ambient air. Upon completing this initial optimization stage, we introduce a strong external magnetic field perpendicular to the epitaxial layers, to fine tune the laser output properties. This magnetic field alters the electron energy spectrum by splitting the continuous energy subbands into discrete Landau levels whose arrangement influences the magnitude of the optical gain. In addition, strong effects of band nonparabolicity result in subtle changes in the lasing wavelength at magnetic fields which maximize the gain, thus allowing us to explore the prospects of multi-wavelength emission of the given structure, and achieving resonance with additional compounds, absorbing at wavelengths close to the original one. Numerical results are presented for GaAs/Al(x)Ga(1-x) As based QCL structures designed for operation in the mid-infrared part of the spectrum.",
journal = "Journal of Physics. D: Applied Physics",
title = "Optimization and magnetic-field tunability of quantum cascade laser for applications in trace gas detection and monitoring",
volume = "43",
number = "4",
doi = "10.1088/0022-3727/43/4/045101"
}

Daničić, A., Radovanović, J. V., Milanović, V. B., Indjin, D.,& Ikonić, Z.. (2010). Optimization and magnetic-field tunability of quantum cascade laser for applications in trace gas detection and monitoring. in Journal of Physics. D: Applied Physics, 43(4).
https://doi.org/10.1088/0022-3727/43/4/045101

Daničić A, Radovanović JV, Milanović VB, Indjin D, Ikonić Z. Optimization and magnetic-field tunability of quantum cascade laser for applications in trace gas detection and monitoring. in Journal of Physics. D: Applied Physics. 2010;43(4).
doi:10.1088/0022-3727/43/4/045101 .

Daničić, Aleksandar, Radovanović, Jelena V., Milanović, Vitomir B., Indjin, Dragan, Ikonić, Zoran, "Optimization and magnetic-field tunability of quantum cascade laser for applications in trace gas detection and monitoring" in Journal of Physics. D: Applied Physics, 43, no. 4 (2010),
https://doi.org/10.1088/0022-3727/43/4/045101 . .