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

L. D. Shvartsman, B. Laikhtman

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations


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 Technology and Applications
StatePublished - 2008
EventTerahertz Technology and Applications - San Jose, CA, United States
Duration: 23 Jan 200824 Jan 2008

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


ConferenceTerahertz Technology and Applications
Country/TerritoryUnited States
CitySan Jose, CA


  • Coupled quantum wells
  • Quantum cascade lasers
  • THz lasers


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