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Saturable absorption of intense hard X-rays in iron

Author

Listed:
  • Hitoki Yoneda

    (Institute for Laser Science, University of Electro-Communications, 1-5-1 Chofugaoka, Chofu
    RIKEN SPring-8 Center, Kouto 1-1-1)

  • Yuichi Inubushi

    (RIKEN SPring-8 Center, Kouto 1-1-1
    Japan Synchrotron Radiation Research Institute (JASRI), Kouto 1-1-1)

  • Makina Yabashi

    (RIKEN SPring-8 Center, Kouto 1-1-1)

  • Tetsuo Katayama

    (RIKEN SPring-8 Center, Kouto 1-1-1
    Japan Synchrotron Radiation Research Institute (JASRI), Kouto 1-1-1)

  • Tetsuya Ishikawa

    (RIKEN SPring-8 Center, Kouto 1-1-1)

  • Haruhiko Ohashi

    (RIKEN SPring-8 Center, Kouto 1-1-1
    Japan Synchrotron Radiation Research Institute (JASRI), Kouto 1-1-1)

  • Hirokatsu Yumoto

    (Japan Synchrotron Radiation Research Institute (JASRI), Kouto 1-1-1)

  • Kazuto Yamauchi

    (RIKEN SPring-8 Center, Kouto 1-1-1
    Graduate School of Engineering, Osaka University, 2-1 Yamada-oka)

  • Hidekazu Mimura

    (RIKEN SPring-8 Center, Kouto 1-1-1
    The University of Tokyo, 7-3-1 Hongo)

  • Hikaru Kitamura

    (Kyoto University, Kitashirakawa Oiwake-cho)

Abstract

In 1913, Maurice de Broglie discovered the presence of X-ray absorption bands of silver and bromine in photographic emulsion. Over the following century, X-ray absorption spectroscopy was established as a standard basis for element analysis, and further applied to advanced investigation of the structures and electronic states of complex materials. Here we show the first observation of an X-ray-induced change of absorption spectra of the iron K-edge for 7.1-keV ultra-brilliant X-ray free-electron laser pulses with an extreme intensity of 1020 W cm−2. The highly excited state yields a shift of the absorption edge and an increase of transparency by a factor of 10 with an improvement of the phase front of the transmitted X-rays. This finding, the saturable absorption of hard X-rays, opens a promising path for future innovations of X-ray science by enabling novel attosecond active optics, such as lasing and dynamical spatiotemporal control of X-rays.

Suggested Citation

  • Hitoki Yoneda & Yuichi Inubushi & Makina Yabashi & Tetsuo Katayama & Tetsuya Ishikawa & Haruhiko Ohashi & Hirokatsu Yumoto & Kazuto Yamauchi & Hidekazu Mimura & Hikaru Kitamura, 2014. "Saturable absorption of intense hard X-rays in iron," Nature Communications, Nature, vol. 5(1), pages 1-5, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms6080
    DOI: 10.1038/ncomms6080
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