Compact large-aperture Fabry-Pérot interferometer modules for gas spectroscopy at Mid-IR

Uula Kantojärvi, Aapo Varpula, Tapani Antila, Christer Holmlund, Jussi Mäkynen, Antti Näsilä, Rami Mannila, Anna Rissanen, Jarkko Antila, R J Disch, T A Waldmann

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    5 Citations (Scopus)

    Abstract

    VTT has developed Fabry-Pérot Interferometers (FPI) for visible and infrared wavelengths since 90's. Here we present two new platforms for mid-infrared gas spectroscopy having a large optical aperture to provide high optical throughput but still enabling miniaturized instrument size. First platform is a tunable filter that replaces a traditional filter wheel, which operates between wavelengths of 4-5 um. Second platform is for correlation spectroscopy where the interferometer provides a comb-like transmission pattern mimicking absorption of diatomic molecules at the wavelength range of 4.7-4.8 um. The Bragg mirrors have 2-4 thin layers of polysilicon and silicon oxide
    Original languageEnglish
    Title of host publicationProceedings of SPIE, Vol. 8992, Photonic Instrumentation Engineering
    PublisherInternational Society for Optics and Photonics SPIE
    Number of pages10
    Volume8992
    DOIs
    Publication statusPublished - 2014
    MoE publication typeA4 Article in a conference publication
    EventSPIE Photonics West 2014 - San Francisco, United States
    Duration: 1 Feb 20146 Feb 2014

    Publication series

    SeriesProceedings of SPIE
    Volume8992

    Conference

    ConferenceSPIE Photonics West 2014
    CountryUnited States
    CitySan Francisco
    Period1/02/146/02/14

    Keywords

    • Fabry-Perot Interferometer
    • gas
    • spectroscopy
    • infrared
    • correlation
    • tunable filter

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  • Cite this

    Kantojärvi, U., Varpula, A., Antila, T., Holmlund, C., Mäkynen, J., Näsilä, A., Mannila, R., Rissanen, A., Antila, J., Disch, R. J., & Waldmann, T. A. (2014). Compact large-aperture Fabry-Pérot interferometer modules for gas spectroscopy at Mid-IR. In Proceedings of SPIE, Vol. 8992, Photonic Instrumentation Engineering (Vol. 8992). International Society for Optics and Photonics SPIE. Proceedings of SPIE, Vol.. 8992 https://doi.org/10.1117/12.2036336