IR spectroscopic technologies for gas sensing

Pentti Karioja, Matteo Cherchi, Mikko Harjanne, Jukka Viheriälä, Mircea Guina, Ryszard Buczynski, Rafał Kasztelanic, Tomi Salo, Sami Virtanen, Pawel Kluczynski, Lars Borgen, Przemyslaw Kalinowski

    Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific


    Cost effective multi-wavelength light sources are key enablers for spectroscopic applications at Mid-IR wavelength range. Use of interference filters is the most conventional method for selecting IR absorption bands for gas sensing. Currently, MEMS based tuneable filters are also available for required Mid-IR wavelengths. Integrated optics based filters are the most advanced method for spectral filtering. We introduce a novel Mid-IR light source concept that is utilizing a novel Si-photonics based Photonic Integrated Circuit (PIC) filter and wide-band Mid-IR SLEDs. The spectral bands are switchable and tunable and they can be modulated. The source allows for the fabrication of an affordable multi-band gas sensor with good selectivity and sensitivity. The unit price can be lowered in high volumes by utilizing tailored molded IR lens technology and automated packaging and assembling technologies.
    Original languageEnglish
    Title of host publicationInternational Conference on New Trends in Contemporary Optics
    Subtitle of host publicationSeptember 23rd - 26th, 2019, Vinh City, Vietnam
    Number of pages1
    Publication statusPublished - Sept 2019
    MoE publication typeNot Eligible
    EventInternational Conference on New Tends in Contemporary Optics - Vinh City, Viet Nam
    Duration: 23 Sept 201926 Sept 2019


    ConferenceInternational Conference on New Tends in Contemporary Optics
    Country/TerritoryViet Nam
    CityVinh City


    • SLED
    • Si photonics
    • Mid-IR integrated optics
    • PIC
    • Mid-IR lens
    • photonics packaging
    • gas sensing
    • OtaNano


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