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Influence of 3-D Effects on the Contrast in Photothermal Imaging

  • F. Lepoutre
  • D. Fournier
  • A. C. Boccara

Abstract

It has been demonstrated both experimentally and theoretically that thermal wave imaging is a very efficient quantitative tool for subsurface defect characterization. For instance, at less than one thermal diffusion length, defects equivalent to a 0.1 micron thick air slice are easily observed when using extended uniform excitation. Nevertheless, to achieve a good spatial resolution, the excitation beam is often focused on the surface.

Keywords

Thermal Diffusivity Pump Beam Finite Thickness Mirage Effect Excitation Beam 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    M. Chow, J. Appl. Phys. 51, 4053 (1980).CrossRefGoogle Scholar
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    F.A. McDonald, J. Appl. Phys. 52, 381 (1981).CrossRefGoogle Scholar
  3. 3.
    F. Lepoutre, B.K. Bein and L.J. Inglehart, Can. J. Phys. (Oct. 1986).Google Scholar

Copyright information

© Plenum Press, New York 1987

Authors and Affiliations

  • F. Lepoutre
    • 1
  • D. Fournier
    • 1
  • A. C. Boccara
    • 1
  1. 1.Laboratoire d’OptiqueÉcole Supérieure de Physique et de ChimieParisFrance

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