| DOI | Resolve DOI: https://doi.org/10.1364/OE.23.005201 |
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| Author | Search for: Franckié, Martin; Search for: Winge, David O.; Search for: Wolf, Johanna; Search for: Liverini, Valeria; Search for: Dupont, Emmanuel1; Search for: Trinité, Virginie; Search for: Faist, Jérôme; Search for: Wacker, Andreas |
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| Affiliation | - National Research Council of Canada. Information and Communication Technologies
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| Format | Text, Article |
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| Abstract | We study the impact of interface roughness on the operation of mid-IR and THz quantum cascade lasers. Particular emphasis is given towards the differences between the Gaussian and exponential roughness distribution functions, for which we present results from simulation packages based on nonequilibrium Green’s functions and density matrices. The Gaussian distribution suppresses scattering at high momentum transfer which enhances the lifetime of the upper laser level in mid-IR lasers. For THz lasers, a broader range of scattering transitions is of relevance, which is sensitive to the entire profile of the interface fluctuations. Furthermore we discuss the implementation of interface roughness within a two band model. |
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| Publication date | 2015 |
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| Publisher | Optical Society of America |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 23001504 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 88da9364-8edf-42ed-8850-7ff1479b8962 |
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| Record created | 2017-02-20 |
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| Record modified | 2020-04-22 |
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