Time-resolved Bragg coherent X-ray diffraction revealing ultrafast lattice dynamics in nano-thickness crystal layer using X-ray free electron laser

Yoshihito Tanaka, Kiminori Ito, Takashi Nakatani, Rena Onitsuka, Marcus Newton, Takahiro Sato, Tadashi Togashi, Makina Yabashi, Tomoya Kawaguchi, Koki Shimada, Kazuya Tokuda, Isao Takahashi, Tetsu Ichitsubo, Eiichiro Matsubara, Yoshinori Nishino

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Ultrafast time-resolved Bragg coherent X-ray diffraction (CXD) has been performed to investigate lattice dynamics in a thin crystal layer with a nanoscale thickness by using a SASE (Self-Amplified Spontaneous Emission)-XFEL (X-ray Free Electron Laser) facility, SACLA. Single-shot Bragg coherent diffraction patterns of a 100nm-thick silicon crystal were measured in the asymmetric configuration with a grazing exit using an area detector. The measured coherent diffraction patterns showed fringes extending in the surface normal direction. By using an optical femtosecond laser-pump and the XFEL-probe, a transient broadening of coherent diffraction pattern profile was observed at a delay time of around a few tens of picosecond, indicating transient crystal lattice fluctuation induced by the optical laser. A perspective application of the time-resolved Bragg CXD method to investigate small sized grains composing ceramic materials is discussed.

Original languageEnglish
Pages (from-to)283-286
Number of pages4
JournalJournal of the Ceramic Society of Japan
Volume121
Issue number1411
DOIs
Publication statusPublished - 2013 Mar
Externally publishedYes

Keywords

  • Coherent X-ray diffraction
  • Nanocrystal
  • Semiconductor
  • Time-resolved measurement
  • X-ray free electron laser

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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  • Cite this

    Tanaka, Y., Ito, K., Nakatani, T., Onitsuka, R., Newton, M., Sato, T., Togashi, T., Yabashi, M., Kawaguchi, T., Shimada, K., Tokuda, K., Takahashi, I., Ichitsubo, T., Matsubara, E., & Nishino, Y. (2013). Time-resolved Bragg coherent X-ray diffraction revealing ultrafast lattice dynamics in nano-thickness crystal layer using X-ray free electron laser. Journal of the Ceramic Society of Japan, 121(1411), 283-286. https://doi.org/10.2109/jcersj2.121.283