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Document type:
Zeitschriftenaufsatz 
Author(s):
Jirauschek, C.; Mátyás, A.; Lugli, P. 
Title:
Modeling bound-to-continuum terahertz quantum cascade lasers: The role of Coulomb interactions 
Abstract:
Based on an ensemble Monte Carlo analysis, we show that Coulomb interactions play a dominant role in bound-to-continuum terahertz quantum cascade lasers and thus require careful modeling. Coulomb interactions enter our simulation in the form of space charge effects as well as Coulomb scattering events. By comparison to a full many-subband Coulomb screening model, we show that simplified approaches produce considerable deviations for such structures. Also the spin dependence of electron-electron...    »
 
Keywords:
Space charge effects Quantum cascade lasers Electron scattering Conduction bands Carrier scattering 
Journal title:
J. Appl. Phys. 107, 013104 (2010) 
Year:
2010 
Publisher:
AIP Publishing LLC.