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arXiv · 1608.08013

Mid-infrared dual-comb spectroscopy with electro-optic modulators

Ming Yan·Pei-Ling Luo·Kana Iwakuni·Guy Millot·Theodor W. Hänsch·Nathalie Picqué
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Abstract

We demonstrate dual-comb spectroscopy based on difference frequency generation of frequency-agile near-infrared frequency combs, produced with the help of electro-optic modulators. The combs have a remarkably flat intensity distribution and their positions and line spacings can be selected freely by simply dialing a knob. We record, in the 3-micron region, Doppler-limited absorption spectra with resolved comb lines within milliseconds. Precise molecular line parameters are retrieved. Our technique holds promise for fast and sensitive time-resolved studies e.g. of trace gases.

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Ming Yan, Pei-Ling Luo, Kana Iwakuni, Guy Millot, Theodor W. Hänsch, Nathalie Picqué. 2016-08-29. Mid-infrared dual-comb spectroscopy with electro-optic modulators. https://doi.org/10.1038/lsa.2017.76

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