Integrated multi-wavelength Mid-IR light source for gas sensing

Pentti Karioja (Corresponding author), Teemu Alajoki, Matteo Cherchi, Jyrki Ollila, Mikko Harjanne, Noora Heinilehto, Soile Suomalainen, Nouman Zia, Heidi Tuorila, Jukka Viheriälä, Mircea Guina, Ryszard Buczynski, Rafal Kasztelanic, Tomi Salo, Sami Virtanen, Pawel Kluczynski, Lars Borgen, Marcin Ratajczyk, Przemyslaw Kalinowski

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

    5 Citations (Scopus)
    268 Downloads (Pure)


    Cost effective multi-wavelength light sources are key enablers for spectroscopic applications at Mid-IR wavelength range. Utilizing a novel Mid-IR Si-based photonic integrated circuit filter and wide-band Mid-IR SLEDs, we show the concept of a light source that covers 2.7…3.5 μm wavelength range with a resolution <1nm. 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. The status of the development of the key components of the light source are reported. The Mid-IR PIC is based on the use of thick-SOI technology, SLED is based on AlGaInAsSb materials and the lenses are tailored single crystal, non-oxide glass and heavy metal oxide glasses fabricated by the use of hot-embossing. The packaging concept utilizing automated assembly tools are depicted. In safety and security applications, the Mid-IR wavelength range covered by the source allows for the detection of several harmful gas components with a single sensor. At the moment, affordable sources are not available. The market impact is expected to be disruptive, since the devices currently in the market are either complicated, expensive
    Original languageEnglish
    Title of host publicationNext-Generation Spectroscopic Technologies XI
    EditorsMark A. Druy, Steven M. Barnett, Luisa T.M. Profeta, Richard A. Crocombe, Abul K. Azad
    PublisherInternational Society for Optics and Photonics SPIE
    Number of pages9
    ISBN (Electronic)978-1-5106-1826-8
    ISBN (Print)978-1-5106-1825-1
    Publication statusPublished - 2018
    MoE publication typeA4 Article in a conference publication
    EventNext-Generation Spectroscopic Technologies XI - Orlando, United States
    Duration: 16 Apr 201818 Apr 2018

    Publication series

    SeriesProceedings of SPIE


    ConferenceNext-Generation Spectroscopic Technologies XI
    Country/TerritoryUnited States


    This project has received funding from European Union’s Horizon 2020 research and innovation programme under grant agreement No 644192 (MIREGAS).


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


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