Cavity enhanced terahertz modulation

N. Born, M. Scheller, M. Koch, J. V. Moloney

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


We present a versatile concept for all optical terahertz (THz) amplitude modulators based on a Fabry-Pérot semiconductor cavity design. Employing the high reflectivity of two parallel meta-surfaces allows for trapping selected THz photons within the cavity and thus only a weak optical modulation of the semiconductor absorbance is required to significantly damp the field within the cavity. The optical switching yields to modulation depths of more than 90% with insertion efficiencies of 80%.

Original languageEnglish (US)
Article number103508
JournalApplied Physics Letters
Issue number10
StatePublished - Mar 10 2014

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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