Abstract

Recent advances in the field of dual-comb spectroscopy (DCS) are often based on single-cavity concepts due to the excellent mutual noise suppression [1,2]. Here, we present results with a MW-level peak power dual-comb oscillator based on thin-disk technology. The dual-comb laser shows excellent mutual coherence thanks to its single-cavity design [3]. The high output peak power simplifies nonlinear frequency conversion profoundly, which paves the way toward deep UV dual-comb spectroscopy. In this spectral domain, DCS promises an increase of spectral resolution compared to grating-based spectrometers of 6 orders of magnitude and synchrotron-based spectrometers of 2 orders of magnitude [4].

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