High-Precision Dual-Comb Sensing Method Keeps Compact Footprint . CHANGCHUN, China, May 5, 2022 — Dual-comb photothermal spectroscopy (DC-PTS), demonstrated for the first time by a joint team from the Chinese University of Hong Kong and the Changchun Institute of Optics, Fine Mechanics and Physics (CIOMP), could provide a highly sensitive solution to broadband gas sensing and measurement. Where conventional frequency comb spectroscopy requires a sophisticated spectrometer ...