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    We developed a sensitive methane gas detection system using single-photon upconversion. This technology enhances environmental monitoring capabilities for industrial applications.

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    Area of Science:

    • Photonics and Spectroscopy
    • Environmental Sensing
    • Gas Detection Technologies

    Background:

    • Single-photon light detection and ranging (LIDAR) offers high-sensitivity direct detection for environmental monitoring.
    • Industrial settings require sensitive and cost-effective solutions for methane gas detection.

    Purpose of the Study:

    • To develop a sensitive methane gas detection system utilizing waveguide-based single-photon upconversion.
    • To demonstrate the feasibility of this system for outdoor methane sensing applications.

    Main Methods:

    • Waveguide fabrication and testing were performed.
    • A fibre-pigtailed waveguide package was developed.
    • The system was integrated with an active imaging module for outdoor testing.

    Main Results:

    • An internal upconversion efficiency of 86% was achieved.
    • Successful demonstration of methane gas sensing in an outdoor environment.
    • The system enables enhanced sensitivity for environmental monitoring.

    Conclusions:

    • Waveguide-based single-photon upconversion is a practical approach for sensitive methane detection.
    • This technology can improve cost-effective environmental monitoring systems.
    • The developed system shows promise for real-world industrial applications.