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Proceedings Paper

Pulsed photothermal radiometric investigations of optical and thermal properties
Author(s): Christoph H. Schmitz; Thomas G. Hantzko; Stefan Lohmann; Holger Lubatschowski; Wolfgang Ertmer
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Paper Abstract

The knowledge of laser tissue interaction, the light propagation in tissue and thus its optical properties are of fundamental importance for both laser treatment and diagnostics. We use the method of pulsed photothermal radiometry (PPTR) to evaluate optical or thermal properties of tissue-like phantoms. Because its a non-destructive and non-contact technique its a promising tool for tissue optics in vivo. As phantoms we used gelatine of known optical properties with ink added as absorber. Once the thermal features are known, one can determine the optical properties of the sample and vice versa. PPTR investigations of absorption coefficients were compared to other methods such as time resolved stress detection and optical transmission measurements. PPTR is a suitable tool to perform spectroscopy under conditions of high pressure and/or temperature and can therefore be used to investigate the ablation process.

Paper Details

Date Published: 5 December 1996
PDF: 8 pages
Proc. SPIE 2923, Laser-Tissue Interaction and Tissue Optics II, (5 December 1996); doi: 10.1117/12.260735
Show Author Affiliations
Christoph H. Schmitz, Univ. Hannover (Germany)
Thomas G. Hantzko, Univ. Hannover (Germany)
Stefan Lohmann, Univ. Hannover (FRG) and Laserzentrum Hannover (Germany)
Holger Lubatschowski, Univ. Hannover (FRG) and Laserzentrum Hannover (Germany)
Wolfgang Ertmer, Laserzentrum Hannover (Germany)

Published in SPIE Proceedings Vol. 2923:
Laser-Tissue Interaction and Tissue Optics II
Hansjoerg Albrecht; Guy P. Delacretaz; Thomas H. Meier; Rudolf W. Steiner; Lars Othar Svaasand, Editor(s)

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