The linewidth enhancement factor of intersubband lasers

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

Abstract

The linewidth enhancement (α-factor) of intersubband lasers was initially expected to be zero. However, nonzero values have been found in experimental investigations. This paper will give further details on how this controversy has been recently resolved by showing that counter rotating terms, usually ignored in simulations are the actual fundamental origin of nonzero α at peak gain even without inclusion of nonparabolicity and many-body effects, which are however needed to explain negative values. For laser without inversion conditions, α is found to be larger, but still at the same order of magnitude of conventional inverted medium lasers.

Original languageBritish English
Title of host publicationICTON 2017 - 19th International Conference on Transparent Optical Networks
PublisherIEEE Computer Society
ISBN (Electronic)9781538608586
DOIs
StatePublished - 1 Sep 2017
Event19th International Conference on Transparent Optical Networks, ICTON 2017 - Girona, Catalonia, Spain
Duration: 2 Jul 20176 Jul 2017

Publication series

NameInternational Conference on Transparent Optical Networks
ISSN (Electronic)2162-7339

Conference

Conference19th International Conference on Transparent Optical Networks, ICTON 2017
Country/TerritorySpain
CityGirona, Catalonia
Period2/07/176/07/17

Keywords

  • intersubband transitions
  • linewidth enhancement factor
  • many body effects
  • mid infrared
  • nonparabolicity
  • THz

Fingerprint

Dive into the research topics of 'The linewidth enhancement factor of intersubband lasers'. Together they form a unique fingerprint.

Cite this