Investigation of laser-tissue interaction in medicine by means of laser spectroscopic measurements

Juergen Lademann; Hans-Juergen Weigmann

doi:10.1117/12.199235

18 January 1995 Investigation of laser-tissue interaction in medicine by means of laser spectroscopic measurements

Juergen Lademann, Hans-Juergen Weigmann

Author Affiliations +

Proceedings Volume 2323, Laser Interaction with Hard and Soft Tissue II; (1995) https://doi.org/10.1117/12.199235
Event: International Symposium on Biomedical Optics Europe '94, 1994, Lille, France

Abstract

Toxic and carcinogenic substances were produced during laser application in medicine for the cutting and evaporation of tissue. The laser smoke presents a danger potential for the medical staff and the patients. The laser tissue interaction process was investigated by means of laser spectroscopic measurements which give the possibility of measuring metastable molecular states directly as a prerequisite to understand and to influence fundamental laser tissue interaction processes in order to reduce the amount of harmful chemicals. Highly excited atomic and molecular states and free radicals (CN, OH, C₂, CH, CH₂) have been detected applying spontaneous and laser induced fluorescence methods. It was found that the formation of harmful substances in the laser plumes can be reduced significantly by optimization of the surrounding gas atmosphere. A high content of oxygen or water in the interaction zone has been found, in agreement with the results of classical and analytical methods, as a suitable way to decrease pollutant emission. The experimental methods and the principal results are applicable not only in laser medicine but in laser material treatment generally.

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Juergen Lademann and Hans-Juergen Weigmann "Investigation of laser-tissue interaction in medicine by means of laser spectroscopic measurements", Proc. SPIE 2323, Laser Interaction with Hard and Soft Tissue II, (18 January 1995); https://doi.org/10.1117/12.199235

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