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Vector model analysis in nondestructive imaging by using the photothermal deflection methods

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Abstract.

The noncontact imaging of the buried structures is carried out in the open-air atmosphere by using the photothermal deflection (PTD) method. We applied these techniques to the layered samples. Besides the PTD images for the optically opaque buried structures, the parameters of the materials such as thermal diffusivity can also be calculated from the PTD amplitude and phase signal in the PTD scanning images. When the PTD signals at two different modulation frequencies are used, the thermal diffusivity of the buried structure can be obtained from the PTD signal outside of the sample nondestructively.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, National Defense Academy, 1–10–20 Hashirimizu, Yokosuka 239-8686, Japan, , , , , , JP

    T. Kawahara, M. Miyazaki, A. Kimura, Y. Okamoto & J. Morimoto

  2. Department of Computer Science, Chiba Institute of Technology, 2–17–1 Tsudanuma, Narashino 275-0016, Japan, , , , , , JP

    T. Miyakawa

Authors
  1. T. Kawahara
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  2. M. Miyazaki
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  3. A. Kimura
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  4. Y. Okamoto
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  5. J. Morimoto
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  6. T. Miyakawa
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Additional information

Received: 27 November 1998 / Accepted: 18 March 1999 / Published online: 7 July 1999

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Kawahara, T., Miyazaki, M., Kimura, A. et al. Vector model analysis in nondestructive imaging by using the photothermal deflection methods . Appl Phys A 69, 343–346 (1999). https://doi.org/10.1007/s003390051011

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  • DOI: https://doi.org/10.1007/s003390051011

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