title: High-resolution broadband terahertz spectroscopy via electronic heterodyne detection of photonically generated terahertz frequency comb.
abstract: We report an alternative approach to the terahertz frequency-comb spectroscopy (TFCS) based on nonlinear mixing of a photonically generated terahertz pulse train with a continuous wave signal from an electronic synthesizer. A superlattice is used as a nonlinear mixer. Unlike the standard TFCS technique, this approach does not require a complex double-laser system but retains the advantages of TFCS-high spectral resolution and wide bandwidth.
authors.forename: D G
authors.initials: DG
authors.lastname: Pavelyev
authors.forename: A S
authors.initials: AS
authors.lastname: Skryl
authors.forename: M I
authors.initials: MI
authors.lastname: Bakunov