Abstract-High-resolution broadband terahertz spectroscopy via electronic heterodyne detection of photonically generated terahertz frequency comb

D. G. Pavelyev, A. S. Skryl, and M. I. Bakunov  »View Author Affiliations

http://www.opticsinfobase.org/ol/abstract.cfm?uri=ol-39-19-5669

Optics Letters, Vol. 39, Issue 19, pp. 5669-5672 (2014)
http://dx.doi.org/10.1364/OL.39.005669

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.

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