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:: https://doi.org/10.1002/pssc.200673314
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    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 - Does NOT include content added after October 2018: Materials and Engineering Research Institute > Thin Films Research Centre > Electronic Materials and Sensors Research Group
    Identification Number: https://doi.org/10.1002/pssc.200673314
    Page Range: 356-359
    Depositing User: Helen Garner
    Date Deposited: 03 Nov 2014 14:15
    Last Modified: 13 Jun 2017 13:21
    URI: http://shura.shu.ac.uk/id/eprint/8654

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