Nondispersive and multichannel analyzers based on mid-IR LEDs and arrays

Jouko Malinen, Tapio Hannula, Nonna V. Zotova, Sergei Arcadievich Karandashov, Igor Ivanovich Markov, Boris Anatolievich Matveev, Nikolai Matveevich Stus, Georgii Nikolaevich Talalakin

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

    10 Citations (Scopus)


    This paper briefly describes the fabrication of infrared light emitting diodes by liquid phase epitaxy including both InGaAs LEDs for emission wavelengths from 2.5 to 3.8 micrometers and InAsSbP for wavelengths from 3.8 to 4.7 micrometers. Some of the first applications of these LEDs in spectroscopic instrumentation are described together with the main instrument characteristics. Nondispersive analyzers have been developed for CH4 and CO detection utilizing LED sources emitting at 3.3 and 4.7 micrometers, respectively. A novel infrared spectrometer construction has been developed based on a linear LED array emitting at 3.3 micrometers and a fixed grating monochromator. This miniature construction can be used as an electrically scanned spectrometer module in future IR analyzers for portable and process on-line applications.
    Original languageEnglish
    Title of host publicationOptical Methods for Chemical Process Control
    EditorsStuart Farquharson, Jeremy M. Lerner
    Place of PublicationBellingham
    PublisherInternational Society for Optics and Photonics SPIE
    ISBN (Print)978-0-8194-1334-5
    Publication statusPublished - 1993
    MoE publication typeA4 Article in a conference publication
    EventOptical Tools for Manufacturing and Advanced Automation - Boston, United States
    Duration: 7 Sept 199310 Sept 1993

    Publication series

    SeriesProceedings of SPIE


    ConferenceOptical Tools for Manufacturing and Advanced Automation
    Country/TerritoryUnited States


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