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Related Experiment Video

Updated: Apr 27, 2026

Cryogenic Liquid Jets for High Repetition Rate Discovery Science
08:34

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Liquid-sheet jets for terahertz spectroscopy.

Masato Kondoh, Masaaki Tsubouchi

    Optics Express
    |July 1, 2014
    PubMed
    Summary

    Researchers developed controllable liquid-sheet jets for terahertz (THz) spectroscopy. By adjusting nozzle collision angles, they precisely controlled liquid sheet thickness for enhanced spectroscopic analysis.

    Area of Science:

    • Spectroscopy
    • Fluid Dynamics
    • Optics

    Background:

    • Terahertz (THz) spectroscopy requires stable, optically flat liquid jets for accurate measurements.
    • Controlling liquid sheet thickness is crucial for optimizing THz spectroscopic applications.

    Purpose of the Study:

    • To investigate liquid-sheet jets with controllable thickness for terahertz spectroscopy.
    • To develop methods for precise thickness determination of liquid sheets.
    • To demonstrate the tunability of liquid sheet thickness using nozzle design.

    Main Methods:

    • Generation of optically flat liquid jets using slit-type and colliding-jet nozzles.
    • Precise measurement of liquid sheet thickness via spectral interference.
    • Characterization of liquid sheet thickness using terahertz time-domain-spectroscopy (THz-TDS).

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    Main Results:

    • Optically flat liquid jets were successfully generated using both nozzle types.
    • Liquid sheet thickness was accurately determined using spectral interference and THz-TDS.
    • Adjusting the collision angle of the colliding-jet nozzle allowed for controlled liquid sheet thickness ranging from 50 to 120 μm.

    Conclusions:

    • Liquid-sheet jets offer a viable platform for terahertz spectroscopy.
    • The developed method enables precise control over liquid sheet thickness.
    • This controllability enhances the potential of liquid jets in advanced spectroscopic applications.