Compact multipass optical cell for laser spectroscopy

Béla Tuzson, Markus Mangold, Herbert Looser, Albert Manninen, Lukas Emmenegger

    Research output: Contribution to journalArticleScientificpeer-review

    108 Citations (Scopus)


    A multipass cell (MPC) design for laser absorption spectroscopy is presented. The development of this new type of optical cell was driven by stringent criteria for compactness, robustness, low volume, and ease of use in optical systems. A single piece of reflective toroidal surface forms a near-concentric cavity with a volume of merely 40cm³. Contrary to traditional MPCs, this design allows for flexible path-length adjustments by simply changing the aiming angle of the laser beam at the entrance window. Two effective optical path lengths of 2.2 and 4.1 m were chosen to demonstrate the cell's suitability for high-precision isotope ratio measurements of CO2 at 1% and ambient mixing ratio levels.
    Original languageEnglish
    Pages (from-to)257-259
    JournalOptics Letters
    Issue number3
    Publication statusPublished - 2013
    MoE publication typeA1 Journal article-refereed


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