Simulation of optically pumped mid‐infrared intersubband semiconductor laser structures
作者:
Jin Wang,
J.‐P. Leburton,
Z. Moussa,
F. H. Julien,
A. Sa’ar,
期刊:
Journal of Applied Physics
(AIP Available online 1996)
卷期:
Volume 80,
issue 4
页码: 1970-1978
ISSN:0021-8979
年代: 1996
DOI:10.1063/1.363088
出版商: AIP
数据来源: AIP
摘要:
A theoretical self‐consistent investigation of optically pumped mid‐infrared intersubband semiconductor laser with hot electron effects is presented. Electron dynamics under optical pumping are investigated within a rate equation formulation where particle and energy flow equations are derived from Boltzmann’s equation using Fermi statistics. Electron‐polar optical phonon interactions with suitable screening are calculated by using a macroscopic model with slab and interface phonon modes. Our calculations show that despite hot electron effects, population inversion between the first and second excited states can occur at low temperatures under intersubband optical excitation. It is anticipated that lasing in the mid‐infrared can be achieved with asymmetric quantum well structures optimized for electron concentrations exceeding 1011/cm2. ©1996 American Institute of Physics.
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