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Generation of 1020 W cm−2 hard X-ray laser pulses with two-stage reflective focusing system

Author

Listed:
  • Hidekazu Mimura

    (Graduate School of Engineering, The University of Tokyo)

  • Hirokatsu Yumoto

    (Japan Synchrotron Radiation Research Institute/SPring-8)

  • Satoshi Matsuyama

    (Graduate School of Engineering, Osaka University)

  • Takahisa Koyama

    (Japan Synchrotron Radiation Research Institute/SPring-8)

  • Kensuke Tono

    (Japan Synchrotron Radiation Research Institute/SPring-8)

  • Yuichi Inubushi

    (RIKEN SPring-8 Center)

  • Tadashi Togashi

    (Japan Synchrotron Radiation Research Institute/SPring-8)

  • Takahiro Sato

    (RIKEN SPring-8 Center)

  • Jangwoo Kim

    (Graduate School of Engineering, Osaka University)

  • Ryosuke Fukui

    (Graduate School of Engineering, Osaka University)

  • Yasuhisa Sano

    (Graduate School of Engineering, Osaka University)

  • Makina Yabashi

    (RIKEN SPring-8 Center)

  • Haruhiko Ohashi

    (Japan Synchrotron Radiation Research Institute/SPring-8
    RIKEN SPring-8 Center)

  • Tetsuya Ishikawa

    (RIKEN SPring-8 Center)

  • Kazuto Yamauchi

    (Graduate School of Engineering, Osaka University)

Abstract

Intense X-ray fields produced with hard X-ray free-electron laser (XFEL) have made possible the study of nonlinear X-ray phenomena. However, the observable phenomena are still limited by the power density. Here, we present a two-stage focusing system consisting of ultra-precise mirrors, which can generate an extremely intense X-ray field. The XFEL beam, enlarged with upstream optics, is focused with downstream optics that have high numerical aperture. A grating interferometer is used to monitor the wavefront to achieve optimum focusing. Finally, we generate an extremely small spot of 30 × 55 nm with an extraordinary power density of over 1 × 1020 W cm−2 using 9.9 keV XFEL light. The achieved power density provides novel opportunities to elucidate unexplored nonlinear phenomena in the X-ray region, which will advance development on quantum X-ray optics, astronomical physics and high-energy density science.

Suggested Citation

  • Hidekazu Mimura & Hirokatsu Yumoto & Satoshi Matsuyama & Takahisa Koyama & Kensuke Tono & Yuichi Inubushi & Tadashi Togashi & Takahiro Sato & Jangwoo Kim & Ryosuke Fukui & Yasuhisa Sano & Makina Yabas, 2014. "Generation of 1020 W cm−2 hard X-ray laser pulses with two-stage reflective focusing system," Nature Communications, Nature, vol. 5(1), pages 1-5, May.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4539
    DOI: 10.1038/ncomms4539
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