Can any design support an effective nanostructure lasing for a few THz?

L. D. Shvartsman, B. Laikhtman

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


We present here a bird eye view on the basic physical factors limiting the efficiency of nanostructure-based THz lasing. The origin of these limitations is the contradiction between the requirements of THz gaps, high radiative matrix element value, and selective depopulation. Various ways were suggested to go out of these limitations. They include: sophisticated nanostructure layout, the usage of QCLs, and switch to bipolar THz lasing. We present the results of detailed density matrix based calculations comparing these approaches. In theory InAs-GaSb bipolar THz lasers are the most promising.

Original languageAmerican English
Title of host publicationTerahertz and Mid Infrared Radiation
Subtitle of host publicationGeneration, Detection and Applications
PublisherSpringer Verlag
Number of pages6
ISBN (Print)9789400707689
StatePublished - 2011

Publication series

NameNATO Science for Peace and Security Series B: Physics and Biophysics
ISSN (Print)1874-6500


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