Time/frequency-domain characterization of a mid-IR DFG frequency comb via two-photon and heterodyne detection: datasets

The authors also acknowledge financial support by the European Union's NextGenerationEU Programme with the I-PHOQS Infrastructure [IR0000016, ID D2B8D520, CUP B53C22001750006] "Integrated infrastructure initiative in Photonic and Quantum Sciences", by the European Union's QuantERA II [G.A. n. 101017733] – QATACOMB Project "Quantum correlations in terahertz QCL combs", and by the Italian ESFRI Roadmap (Extreme Light Infrastructure – ELI Project).