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An optically stabilized dual-comb system at telecom wavelength is used to drive a mid-infrared spectroscopy for parallel gas-phase detection in the functional group region from 2800-3600 cm -1 . A coherent broadband intensity-enhanced spectrum in the mid-infrared region is obtained through dispersion engineered silicon nitride dual-core waveguides.
Nicola Marzari, Giovanni Pizzi, Marco Gibertini
Jean-Claude Bünzli, Fan Zhang, Ting Wang, Zhiyong Liu