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Real-time ultrafast oscilloscope with a relativistic electron bunch train

Author

Listed:
  • In Hyung Baek

    (Korea Atomic Energy Research Institute (KAERI))

  • Hyun Woo Kim

    (Korea Atomic Energy Research Institute (KAERI))

  • Hyeon Sang Bark

    (Korea Atomic Energy Research Institute (KAERI))

  • Kyu-Ha Jang

    (Korea Atomic Energy Research Institute (KAERI))

  • Sunjeong Park

    (Korea Atomic Energy Research Institute (KAERI))

  • Junho Shin

    (Korea Atomic Energy Research Institute (KAERI))

  • Young Chan Kim

    (Korea Atomic Energy Research Institute (KAERI))

  • Mihye Kim

    (Korea Atomic Energy Research Institute (KAERI))

  • Key Young Oang

    (Korea Atomic Energy Research Institute (KAERI))

  • Kitae Lee

    (Korea Atomic Energy Research Institute (KAERI)
    University of Science and Technology (UST))

  • Fabian Rotermund

    (Korea Advanced Institute of Science and Technology (KAIST))

  • Nikolay A. Vinokurov

    (Budker Institute of Nuclear Physics SB RAS
    Novosibirsk State University)

  • Young Uk Jeong

    (Korea Atomic Energy Research Institute (KAERI)
    University of Science and Technology (UST))

Abstract

The deflection of charged particles is an intuitive way to visualize an electromagnetic oscillation of coherent light. Here, we present a real-time ultrafast oscilloscope for time-frozen visualization of a terahertz (THz) optical wave by probing light-driven motion of relativistic electrons. We found the unique condition of subwavelength metal slit waveguide for preserving the distortion-free optical waveform during its propagation. Momentary stamping of the wave, transversely travelling inside a metal slit, on an ultrashort wide electron bunch enables the single-shot recording of an ultrafast optical waveform. As a proof-of-concept experiment, we successfully demonstrated to capture the entire field oscillation of a THz pulse with a sampling rate of 75.7 TS/s. Owing to the use of transversely-wide and longitudinally-short electron bunch and transversely travelling wave, the proposed “single-shot oscilloscope” will open up new avenue for developing the real-time petahertz (PHz) metrology.

Suggested Citation

  • In Hyung Baek & Hyun Woo Kim & Hyeon Sang Bark & Kyu-Ha Jang & Sunjeong Park & Junho Shin & Young Chan Kim & Mihye Kim & Key Young Oang & Kitae Lee & Fabian Rotermund & Nikolay A. Vinokurov & Young Uk, 2021. "Real-time ultrafast oscilloscope with a relativistic electron bunch train," Nature Communications, Nature, vol. 12(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-27256-x
    DOI: 10.1038/s41467-021-27256-x
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