Effects of interface roughness scattering on device performance of indirectly pumped terahertz quantum cascade lasers

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DOIResolve DOI: http://doi.org/10.1088/1742-6596/619/1/012003
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TypeArticle
ConferenceICOOPMA2014, Sixth International Conference on Optical, Optoelectronic and Photonic Materials and Applications, July 27-Aug. 1, 2014, Leeds, U.K.
ISSN1742-6596
Volume619
Pages16; # of pages: 6
AbstractThe impacts of interface roughness (IR) scattering on device performance of indirectly-pumped (IDP) terahertz quantum cascade lasers are studied. Three different active region designs with almost the same lasing frequency at threshold and comparable oscillator strength are experimentally investigated and the measurement data are analyzed and compared with numerical simulation. The simulation results show that all structures suffer from the detrimental effect of intersubband roughness scattering in terms of threshold current density, and probably operating temperature. The intrasubband IR scattering time could also to be a limiting factor in the IDP structures due to the employed high energetic barrier.
Publication date
LanguageEnglish
AffiliationInformation and Communication Technologies; National Research Council Canada
Peer reviewedYes
NPARC number21275932
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Record identifierb0ed2d02-5460-430c-98d9-9e07155352d5
Record created2015-08-10
Record modified2016-05-09
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