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Broadband and high-resolution absorption spectra of molecular cerium oxide (CeO) are obtained in a laser-produced plasma using dual-comb spectroscopy. Simultaneous measurements of Ce and CeO are used to probe time-resolved dynamics of the system. A spectral resolution of 1.24 GHz (2.4 pm) over a bandwidth of 378.7–383.7 THz (781.1–791.5 nm) allows simultaneous detection of hundreds of closely spaced rotational transitions in complex CeO bands.

We demonstrate the use of dual-comb spectroscopy to perform time-resolved absorption measurements on cerium monoxide molecules formed in a laser-produced plasma.

Using the supercontinuum and second harmonic from a dual-comb spectrometer, simultaneous time-resolved absorption measurements of rubidium atomic transitions originating from ground and highly-excited states in the NIR (1529 nm) are obtained following a laser-produced plasma.

We demonstrate a technique for improving performance in dual-comb spectroscopy when utilizing sources based on difference frequency generation without stabilization of the offset frequency by utilizing an etalon to recalibrate time-domain data in post-processing.

We present an all-fiber coherent dual-comb system suitable to perform time-resolved spectroscopy measurements in the long-wave infrared.