Impact of interface roughness distributions on the operation of quantum cascade lasers
(2015) In Optics Express 23(4). p.5201-5212- 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. (C) 2015 Optical... (More)
- 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. (C) 2015 Optical Society of America (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/5293813
- author
- Franckie, Martin LU ; Winge, David LU ; Wolf, Johanna ; Liverini, Valeria ; Dupont, Emmanuel ; Trinite, Virginie ; Faist, Jerome and Wacker, Andreas LU
- organization
- publishing date
- 2015
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Optics Express
- volume
- 23
- issue
- 4
- pages
- 12 pages
- publisher
- Optical Society of America
- external identifiers
-
- wos:000350872700130
- scopus:84924178483
- ISSN
- 1094-4087
- DOI
- 10.1364/OE.23.005201
- project
- Modeling Quantum Cascade Lasers: the Challenge of Infra-Red Devices
- language
- English
- LU publication?
- yes
- id
- 90453866-7fe2-4a30-879e-e21b60342c37 (old id 5293813)
- alternative location
- http://www.opticsinfobase.org/oe/viewmedia.cfm?uri=oe-23-4-5201&seq=0
- date added to LUP
- 2016-04-01 13:35:43
- date last changed
- 2023-11-12 19:01:48
@article{90453866-7fe2-4a30-879e-e21b60342c37, 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. (C) 2015 Optical Society of America}}, author = {{Franckie, Martin and Winge, David and Wolf, Johanna and Liverini, Valeria and Dupont, Emmanuel and Trinite, Virginie and Faist, Jerome and Wacker, Andreas}}, issn = {{1094-4087}}, language = {{eng}}, number = {{4}}, pages = {{5201--5212}}, publisher = {{Optical Society of America}}, series = {{Optics Express}}, title = {{Impact of interface roughness distributions on the operation of quantum cascade lasers}}, url = {{http://dx.doi.org/10.1364/OE.23.005201}}, doi = {{10.1364/OE.23.005201}}, volume = {{23}}, year = {{2015}}, }