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Active hyperspectral imager using a tunable supercontinuum light source based on a MEMS Fabry-Perot interferometer.

Teemu Kääriäinen, Timo Dönsberg

    Optics Letters
    |November 15, 2021
    PubMed
    Summary

    We created an active hyperspectral imager using a tunable supercontinuum laser and a microelectromechanical Fabry-Perot interferometer. This system allows remote ice detection with standard cameras, advancing hyperspectral imaging technology.

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    Area of Science:

    • Optics and Photonics
    • Remote Sensing
    • Materials Science

    Background:

    • Hyperspectral imaging (HSI) traditionally requires complex and expensive optical setups.
    • Integrating tunable light sources with monochromatic sensors offers a more flexible HSI approach.
    • Remote detection of materials like ice is crucial for environmental monitoring and climate studies.

    Purpose of the Study:

    • To develop and characterize an active hyperspectral imager system.
    • To demonstrate the capability of non-dispersive wavelength selection for HSI.
    • To validate the system's performance for remote ice detection.

    Main Methods:

    • Development of an active hyperspectral imager utilizing a tunable near-infrared supercontinuum laser source.
    • Implementation of a microelectromechanical (MEMS) Fabry-Perot interferometer for non-dispersive wavelength selection.
    • Laboratory characterization and demonstration of the imager for remote sensing applications.

    Main Results:

    • Successful development of a compact and tunable active hyperspectral imager.
    • Demonstration of precise wavelength selection without spatial dispersion.
    • Validation of the system's efficacy in remote detection of ice in laboratory conditions.

    Conclusions:

    • The developed active hyperspectral imager offers a versatile and potentially cost-effective alternative to traditional HSI systems.
    • The use of a tunable supercontinuum laser with a MEMS Fabry-Perot interferometer enables flexible hyperspectral data acquisition.
    • This technology shows promise for various remote sensing applications, including environmental monitoring and material analysis.