Interferometric characterization of a semiconductor disk laser driven terahertz source

Matthias Wichmann, Markus Stein, Arash Rahimi-Iman, Stephan W. Koch, Martin Koch

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


Michelson interferometry is used to investigate the pump-power dependent emission bandwidth of a THz emitter based on intra-cavity difference frequency generation in a two-color VECSEL. A multi-mode CW THz signal is found to result from the two simultaneously lasing groups of longitudinal VECSEL modes. Power-dependent experiments reveal a clear correlation between the THz signal bandwidth and the numbers of optical modes involved.

Original languageEnglish (US)
Pages (from-to)503-508
Number of pages6
JournalJournal of Infrared, Millimeter, and Terahertz Waves
Issue number6-7
StatePublished - Jul 2014


  • CW THz sources
  • Surface-emitting semiconductor disk lasers

ASJC Scopus subject areas

  • Radiation
  • Instrumentation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


Dive into the research topics of 'Interferometric characterization of a semiconductor disk laser driven terahertz source'. Together they form a unique fingerprint.

Cite this