The Observation of Transient Thin Film Structures During the Femto-Second Laser Ablation Process by Using the Soft X-Ray Laser Probe

  • N. Hasegawa
  • M. Nishikino
  • M. Ishino
  • N. Ohnishi
  • A. M. Ito
  • Y. Minami
  • M. Baba
  • A. Ya. Faenov
  • N. Inogamov
  • T. Kawachi
  • K. Kondo
  • T. Suemoto
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 202)

Abstract

We modified a soft X-ray laser (SXRL) interferometer synchronized with a Ti:sapphire laser to observe a single-shot image of the nanoscale structure dynamics of materials induced by an optical laser pulse. The lateral resolution on the sample surface was improved to 0.7 μm using precise imaging optics. Using this system, we succeeded in observing thin film structures above the solid (or liquid) surface in the femtosecond laser ablation process of metals (Au). The thin film worked as soft X-ray beam splitter. This result shows a thin film was smooth and dense (with a roughness of a few nanometers and near sold density). Furthermore, it gave rise to the possibility of generating novel transient soft X-ray optics .

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Copyright information

© Springer International Publishing AG 2018

Authors and Affiliations

  • N. Hasegawa
    • 1
  • M. Nishikino
    • 1
  • M. Ishino
    • 1
  • N. Ohnishi
    • 2
  • A. M. Ito
    • 3
  • Y. Minami
    • 4
  • M. Baba
    • 5
  • A. Ya. Faenov
    • 6
  • N. Inogamov
    • 7
  • T. Kawachi
    • 1
  • K. Kondo
    • 1
  • T. Suemoto
    • 4
  1. 1.Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and TechnologyKyotoJapan
  2. 2.Department of Aerospace EngineeringTohoku UniversitySendaiJapan
  3. 3.Department of Helical Plasma ResearchNational Institute for Fusion Science (NIFS)Toki City, GifuJapan
  4. 4.Institute for Solid State PhysicsThe University of TokyoChibaJapan
  5. 5.Saitama Medical UniversitySaitamaJapan
  6. 6.Osaka UniversitySuitaJapan
  7. 7.Landau Institute for Theoretical Physics of Russian Academy of SciencesChernogolovka, Moscow RegionRussia

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