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Transmission study of germanium using free-electron laser

  • H. Furuse
  • N. Mori
  • H. Kubo
  • H. Momose
  • M. Kondow
Article

Abstract

We have measured optical transmittance through germanium in the mid-infrared region at room temperature using the Osaka free-electron laser (FEL). In spite of the fact that germanium is transparent in the mid-infrared region, we observed strong suppression of optical transmission under high-intensity FEL excitation. We found that the observed suppression is due to optical absorption in germanium. To analyze the experimental results, we have calculated optical transmittance of germanium within Keldysh theory

Keywords

ZnSe Wavelength Dependence Multiphoton Ionization Tunneling Ionization Intense Laser Field 
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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • H. Furuse
    • 1
  • N. Mori
    • 1
  • H. Kubo
    • 1
  • H. Momose
    • 1
  • M. Kondow
    • 1
  1. 1.Department of Electronic EngineeringOsaka UniversitySuita, OsakaJapan

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