Journal
JOURNAL OF APPLIED PHYSICS
Volume 92, Issue 11, Pages 6921-6923Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1517747
Keywords
-
Categories
Ask authors/readers for more resources
A technique for calculating the temperature of the nonequilibrium electron distribution functions in general quantum well intersubband devices is presented. Two recent GaAs/Ga1-xAlxAs quantum cascade laser designs are considered as illustrative examples of the kinetic energy balance method. It is shown that at low current densities the electron temperature recovers the expected physical limit of the lattice temperature, and that it is also a function of current density and the quantised energy level structure of the device. The results of the calculations show that the electron temperature T-e can be approximated as a linear function of the lattice temperature T-l and current density J, of the form T-e=T-l+alpha(e-l)J, where alpha(e-l) is a coupling constant (similar to6-7 K/kA cm-2 for the devices studied here) which is fixed for a particular device. (C) 2002 American Institute of Physics.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available