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    Area of Science:

    • Spectroscopy
    • Terahertz (THz) technology
    • Laser systems

    Background:

    • Terahertz (THz) spectroscopy is crucial for material analysis.
    • Current methods can be limited by speed and wavelength flexibility.
    • Real-time analysis requires rapid spectral acquisition.

    Purpose of the Study:

    • To develop a real-time terahertz (THz) spectroscopy system.
    • To enable fast acquisition of THz spectra.
    • To facilitate real-time reagent measurement.

    Main Methods:

    • Utilized a rapidly wavelength-switchable injection-seeded THz parametric generator.
    • Developed a wavelength-switchable external cavity diode laser with a digital micromirror device seed source.
    • Integrated THz parametric detection with a near-infrared camera.

    Main Results:

    • Achieved fast THz spectral acquisition by switching laser wavelengths for each pump beam pulse.
    • Demonstrated a wide dynamic range exceeding 75 dB and high system stability.
    • Enabled detection of all wavelengths in a single frame for real-time reagent measurement.

    Conclusions:

    • The developed system provides rapid, stable, and wide dynamic range THz spectroscopy.
    • This advancement allows for real-time reagent measurement and analysis.
    • The technology offers enhanced capabilities for various spectroscopic applications.