Facing the challenges of THz quantum cascade laser device development: The relevance of nonequilibrium many body theories

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Abstract

In this review we summarize current challenges for THz quantum cascade laser development, as well as recent theoretical results, which indicate the relevance of nonequilibrium many body effects in the complex scattering and correlation microscopic mechanisms underlying the operation of those devices. The strongly nonthermal nature of the electronic wavefunctions, the fact that the energy difference between the subbands relevant for laser action are of the order of many body effects, and of the resulting level broadening, the Coulomb enhanced cross absorption, as well as the need to account for dephasing in the transport, require our advanced nonequilibrium many body approach for predictive simulations.

Original languageBritish English
Title of host publicationProceedings - 2005 International Semiconductor Conference, CAS 2005
Pages27-33
Number of pages7
DOIs
StatePublished - 2005
Event2005 International Semiconductor Conference, CAS 2005 - Sinaia, Romania
Duration: 3 Oct 20055 Oct 2005

Publication series

NameProceedings of the International Semiconductor Conference, CAS
Volume1

Conference

Conference2005 International Semiconductor Conference, CAS 2005
Country/TerritoryRomania
CitySinaia
Period3/10/055/10/05

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