Influence of disorder and a parallel magnetic field on a quantum cascade laser

Apalkov, V. M.; Chakraborty, Tapash
February 2001
Applied Physics Letters;2/5/2001, Vol. 78 Issue 6, p697
Academic Journal
The luminescence spectra of a quantum cascade laser (QCL) in a strong magnetic field is influenced significantly by the presence of disorder (charged or neutral) in the system. An externally applied magnetic field parallel to the electron plane causes a redshift of the luminescence peak in the absence of any disorder potential. Our results indicate that the disorder potential tends to cancel that redshift and causes a rapid decrease of the luminescence peak. A similar behavior was observed in a recent experiment on a QCL in a parallel magnetic field by S. Blaser, L. Diehl, M. Beck, and J. Faist [Physica E 7, 33 (2000)]. © 2001 American Institute of Physics.


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