Versatile spectrally shapeable multi-mode terahertz system

M. Scheller, M. Stecher, M. Gerhard, M. Koch

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


We present a multimode continuous wave terahertz spectrometer driven by a compact laser diode with a tunable spectrum. An external feedback based on two optical gratings into the diode allows us to shape the laser emission spectrum, and hence the temporal shape of the terahertz signals. In particular, we show a power enhancement of a factor of ten for individual regions of the spectrum to gain a signal-to-noise ratio in the frequency range of interest.

Original languageEnglish (US)
Pages (from-to)81-84
Number of pages4
JournalApplied Physics B: Lasers and Optics
Issue number1
StatePublished - Jan 2012
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • General Physics and Astronomy


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