Frequency-comb-referenced mid-infrared source for high-precision spectroscopy

Jari Peltola, Markku Vainio, Thomas Fordell, Tuomas Hieta, Mikko Merimaa, Lauri Halonen

    Research output: Contribution to journalArticleScientificpeer-review

    20 Citations (Scopus)


    We report on a tunable continuous-wave mid-infrared optical parametric oscillator (OPO), which is locked to a fully stabilized near-infrared optical frequency comb using a frequency doubling scheme. The OPO is used for 40 GHz mode-hop-free, frequency-comb-locked scans in the wavelength region between 2.7 and 3.4 μm. We demonstrate the applicability of the method to high-precision cavity-ring-down spectroscopy of nitrous oxide (N2O) and water (H2O) at 2.85 μm and of methane (CH4) at 3.2 μm.

    Original languageEnglish
    Pages (from-to)32429-32439
    Number of pages11
    JournalOptics Express
    Issue number26
    Publication statusPublished - 29 Dec 2014
    MoE publication typeA1 Journal article-refereed


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