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Showing 1–4 of 4 results
Advanced filters: Author: Kazuaki Togawa Clear advanced filters

  • To study the dynamics of materials and biological samples at ultrafast time scales it is beneficial to use two short laser pulses, ideally at different energies. Here, the authors demonstrate the generation of two femtosecond hard X-ray laser pulses in a free electron laser, with more than 30% energy separation.

    • Toru Hara
    • Yuichi Inubushi
    • Tetsuya Ishikawa
    Research
    Nature Communications
    Volume: 4, P: 1-5

  • A nearly Fourier-limited X-ray free-electron laser beam is generated by a self-seeding scheme. The beam in the first half of the undulators is monochromatized via Bragg reflection, and is subsequently amplified in the remaining undulators.

    • Ichiro Inoue
    • Taito Osaka
    • Makina Yabashi
    Research
    Nature Photonics
    Volume: 13, P: 319-322

  • Researchers report sub-ångström fundamental-wavelength lasing at the SPring-8 Angstrom Compact Free-Electron Laser in Japan. The output has a maximum power of more than 10 GW, a pulse duration of 10−14 s and a lasing wavelength of 0.634 Å.

    • Tetsuya Ishikawa
    • Hideki Aoyagi
    • Noritaka Kumagai
    Research
    Nature Photonics
    Volume: 6, P: 540-544