| Issue |
J. Phys. IV France
Volume 04, Number C7, Juillet 1994
8th International Topical Meeting on Photoacoustic and Photothermal Phenomena8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique |
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|---|---|---|
| Page(s) | C7-555 - C7-558 | |
| DOI | https://doi.org/10.1051/jp4:19947130 | |
8th International Topical Meeting on Photoacoustic and Photothermal Phenomena
8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique
J. Phys. IV France 04 (1994) C7-555-C7-558
DOI: 10.1051/jp4:19947130
1 Institut für Optik und Quantenelektronik, Friedrich-Schiller-Universität, Max-Wien-Platz 1, 07743 Jena, Germany
2 York-University, Department of Physics and Astronomy, 4700 Keele Street, North York, Canada, M3J 1P3
3 Ruhr-Universität Bochum, Institut für Experimentalphysik, 44780 Bochum, Germany
© EDP Sciences 1994
8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique
J. Phys. IV France 04 (1994) C7-555-C7-558
DOI: 10.1051/jp4:19947130
Conditions for optimum photothermal discrimination of subsurface thermal inhomogeneities
U. Seidel1, A. Glazov1, K. Haupt1, H.G. Walther1, J. Burt2, B.K. Bein3 and J. Pelzl31 Institut für Optik und Quantenelektronik, Friedrich-Schiller-Universität, Max-Wien-Platz 1, 07743 Jena, Germany
2 York-University, Department of Physics and Astronomy, 4700 Keele Street, North York, Canada, M3J 1P3
3 Ruhr-Universität Bochum, Institut für Experimentalphysik, 44780 Bochum, Germany
Abstract
We present calculated photothermal contrast functions arising from lateral scanning of buried stripe and disk-shaped deviations in thermal conductivity k. From the theoretical findings we derive the measuring conditions in terms of the modulation frequency for which optimal photothermal discrimination of subsurface thermal inhomogeneities can be achieved. The theoretical results have been verified experimentally by measuring model samples, in which localized inhomogeneities were embedded.
© EDP Sciences 1994