Nonlinear crystals for imaging and detection of mid-IR radiation

C. Pedersen*, A. S. Ashik, P. Tidemand-Lichtenberg

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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    Abstract

    The mid-IR wavelength range, i.e. 2-25 μm, houses the vibrational spectra of most gaßes and large molecules found in complex structures such as tißue, plastics or food. When designing an upconversion system for imaging or mid-IR detection, several aspects should be considered. Upconversion has several advantageous features which makes it an interesting option to consider for many mid-IR applications. Main advantages include, low-noise detection even at elevated temperatures, an almost instantaneous response time, phase preservation, and the ability to perform upconversion imaging. The χ(2) crystal properties impact the performance of the system significantly. Design aspects related to the choice of crystal as well as different applications is presented.

    Original languageEnglish
    Title of host publicationProceedings of SPIE
    EditorsSailing He, Sailing He, Laurent Vivien
    Number of pages6
    Volume112841
    PublisherSPIE - International Society for Optical Engineering
    Publication date1 Jan 2020
    Article number112841A
    ISBN (Electronic)9781510633315
    DOIs
    Publication statusPublished - 1 Jan 2020
    EventSPIE Photonics West OPTO 2020 - Moscone Convention Center, San Francisco, United States
    Duration: 1 Feb 20206 Feb 2020
    Conference number: 19

    Conference

    ConferenceSPIE Photonics West OPTO 2020
    Number19
    LocationMoscone Convention Center
    Country/TerritoryUnited States
    CitySan Francisco
    Period01/02/202006/02/2020
    SponsorSPIE
    SeriesProceedings of SPIE - The International Society for Optical Engineering
    Volume11284
    ISSN0277-786X

    Keywords

    • Mid-IR imaging
    • Nonlinear phase matching
    • Sum frequency generation
    • Upconversion imaging

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