Title :
Numerical simulation of extraction barrier width effects on terahertz quantum cascade laser
Author :
Cao, J.C. ; Li, H. ; Lü, J.T. ; Han, Y.J. ; Guo, X.G.
Author_Institution :
Shanghai Inst. of Microsyst. & Inf. Technol., Chinese Acad. of Sci., Shanghai
Abstract :
The effect of extraction barrier width on a resonant-phonon terahertz quantum cascade laser is studied using the Monte Carlo method. The width of extraction barrier is varied from 48 to 33 Aring. The calculated threshold current density increases monotonously with decreasing extraction barrier width, while the peak gain shows nontrivial behavior. The simulation results suggest an optimum extraction barrier width of 36 Aring for peak gain.
Keywords :
III-V semiconductors; Monte Carlo methods; aluminium compounds; current density; gallium arsenide; laser beams; quantum cascade lasers; submillimetre wave lasers; GaAs-Al0.15Ga0.85As; Monte Carlo method; extraction barrier width effects; numerical simulation; terahertz quantum cascade laser; threshold current density; Current density; Data mining; Doping; Electrons; Gallium arsenide; Laboratories; Numerical simulation; Quantum cascade lasers; Resonance; Threshold current;
Conference_Titel :
Infrared, Millimeter and Terahertz Waves, 2008. IRMMW-THz 2008. 33rd International Conference on
Conference_Location :
Pasadena, CA
Print_ISBN :
978-1-4244-2119-0
Electronic_ISBN :
978-1-4244-2120-6
DOI :
10.1109/ICIMW.2008.4665674
