Infrared upconversion hyperspectral imaging

Louis Martinus Kehlet, Peter Tidemand-Lichtenberg, Jeppe Seidelin Dam, Christian Pedersen

    Research output: Contribution to journalJournal articleResearchpeer-review


    In this Letter, hyperspectral imaging in the mid-IR spectral region is demonstrated based on nonlinear frequency upconversion and subsequent imaging using a standard Si-based CCD camera. A series of upconverted images are acquired with different phase match conditions for the nonlinear frequency conversion process. From this, a sequence of monochromatic images in the 3.2-3.4 mu m range is generated. The imaged object consists of a standard United States Air Force resolution target combined with a polystyrene film, resulting in the presence of both spatial and spectral information in the infrared image. (C) 2015 Optical Society of America
    Original languageEnglish
    JournalOptics Letters
    Issue number6
    Pages (from-to)938-941
    Publication statusPublished - 2015


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