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Photo-Thermal Spectroscopy of Thin Solid Films

  • Tanaka Keiji
    Department of Applied Physics, Faculty of Engineering, Hokkaido University
  • Satoh Ryoh
    Department of Applied Physics, Faculty of Engineering, Hokkaido University
  • Odajima Akira
    Department of Applied Physics, Faculty of Engineering, Hokkaido University

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Abstract

A novel photo-thermal spectroscopic method has been developed for determining the optical absorption coefficient of thin films. The temperature rising in the film illuminated with monochromatic light is measured with thin film thermocouples, and the thermo-electric voltage is employed to calculate the absorption coefficient. For a 1 μm-thick amorphous As2S3 film, the coefficient can be determined down to 5×102 cm−1 at desired temperatures.

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Details

  • CRID
    1571980077243499648
  • NII Article ID
    110003929298
  • NII Book ID
    AA10650595
  • Text Lang
    en
  • Data Source
    • CiNii Articles

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