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    Area of Science:

    • Physics
    • Ultrafast Science
    • Accelerator Physics

    Background:

    • Modern accelerator-based light sources, like X-ray free electron lasers and superradiant THz facilities, are crucial for advanced pump-probe experiments.
    • Precise characterization of light pulses is essential for achieving high sensitivity and temporal resolution in these experiments.

    Purpose of the Study:

    • To demonstrate the utility of pulse- and field-resolved detection for enhancing THz pump-femtosecond laser probe experiments.
    • To improve the precision of experiments conducted at superradiant THz facilities and other 4th generation light sources.

    Main Methods:

    • Development and application of a diagnostic scheme for real-time, pulse-resolved detection of superradiant THz pulses.
    • Utilizing correlations between amplitude and phase of emitted pulses from multiple THz sources.

    Main Results:

    • The diagnostic scheme provides real-time information on individual THz pulse properties from multiple sources.
    • Achieved sub-femtosecond timing precision for pump-probe experiments.
    • Established correlations between pulse amplitude and phase, offering insights into driving electron bunch properties.

    Conclusions:

    • Pulse- and field-resolved detection significantly improves the precision of THz pump-femtosecond laser probe experiments.
    • This method offers robust sub-femtosecond timing and valuable insights into electron bunch dynamics.
    • The developed diagnostic is broadly applicable to ultrafast diagnostics at 4th generation light sources.