QWIP structural optimization

K. K. Choi, C. H. Lin, K. M. Leung, T. Tamir

    Research output: Contribution to journalConference articlepeer-review


    Quantum well infrared photodetectors (QWIP) are flexible in tailoring their characteristics to suit an application. In this article, we present a design and optimization concept to construct an infrared spectrometer. It utilizes the broadband absorption of a QWIP and the narrow band light coupling of a grid structure. The QWIP material defines the range of detection wavelengths of the spectrometer while the grid geometry selects out different wavelengths to detect in different detector elements. We will present specific design examples in two wavelength ranges, one from 7.5 to 12 μm and another from 6 to 15 μm We will also present some experimental results to support the design feasibility.

    Original languageEnglish (US)
    Pages (from-to)27-38
    Number of pages12
    JournalProceedings of SPIE - The International Society for Optical Engineering
    StatePublished - 2002
    EventMaterials for Infrared Detectors II - Seattle, WA, United States
    Duration: Jul 8 2002Jul 9 2002


    • Quantum grid
    • Quantum well
    • Spectrometer

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Computer Science Applications
    • Applied Mathematics
    • Electrical and Electronic Engineering


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