Microscopic theory for intersubband spontaneous emission

PEREIRA, Mauro and WACKER, A. (2007). Microscopic theory for intersubband spontaneous emission. physica status solidi (c), 4 (2), 356-359.

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Official URL: http://dx.doi.org/10.1002/pssc.200673314
Link to published version:: 10.1002/pssc.200673314

Abstract

The amplified spontaneous emission spectra of quantum-cascade laser structures is computed with a Keldysh Green’s functions theory. We show that the emission spectra are sharpened in comparison to gain spectra due to wave guide propagation. In addition the different dependence on level occupation causes moderate differences between gain and emission peak positions. Our fit-parameter-free theory is valid in ranges of strong nonequilibrium, where fit-parameters do not even exist.

Item Type: Article
Research Institute, Centre or Group: Materials and Engineering Research Institute > Thin Films Research Centre > Electronic Materials and Sensors Research Group
Identification Number: 10.1002/pssc.200673314
Depositing User: Helen Garner
Date Deposited: 03 Nov 2014 14:15
Last Modified: 03 Nov 2014 14:15
URI: http://shura.shu.ac.uk/id/eprint/8654

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