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    Area of Science:

    • Spectroscopy
    • Optical Physics
    • Instrumentation

    Background:

    • Multi-channel spectrometers offer high-speed, compact, and robust measurements.
    • Enhancing spectrometer resolution beyond pixel Nyquist limits is crucial for real-time dynamic event monitoring.

    Purpose of the Study:

    • To achieve super spectral resolution in a commercial Czerny-Turner spectroscope beyond pixel Nyquist limits.
    • To demonstrate the feasibility of using the Moiré effect for spectral resolution enhancement.

    Main Methods:

    • Utilized the Moiré effect in a commercially available Czerny-Turner spectroscope.
    • Experimentally validated spectral resolution enhancement exceeding pixel Nyquist limits.

    Main Results:

    • Achieved super spectral resolution enhancement up to 0.31 nm.
    • Enhanced spectral resolution by a factor of more than 10.
    • Exceeded the 50-μm pixel Nyquist limits.

    Conclusions:

    • The Moiré effect enables significant spectral resolution enhancement in spectrometers.
    • This method maintains inherent spectrometer advantages like speed and compactness.
    • The technique is promising for real-time monitoring of dynamic spectral events.