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Proceedings Paper

Momentum transfer in laser-induced ablation of hard tissue measured by laser Doppler vibrometry
Author(s): Hans-Jochen Foth; Thomas G. Barton; Dirk H. Meyer; Adriaen Postel
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Paper Abstract

A laser Doppler vibrometer was used in a pendulum experiment to measure the recoil momentum induced in hard tissue by pulsed infrared laser exposure. A Holmium:YAG laser was irradiated at bone and a superpulsed CO2 laser irradiated at dentin. Since the masses of the samples were known and the ablated masses were measured, this method allowed an indirect determination of the velocity of the ablated particles. In a second experiment performed with the CO2 laser the velocities of the ablated particles were measured directly by the time of flight detected by the laser beam of the vibrometer. The results of both methods are in good agreement; at a mean power of 0.5 Watt of the CO2 laser the velocity was 50 - 60 m/s increasing at higher mean powers.

Paper Details

Date Published: 1 July 1998
PDF: 11 pages
Proc. SPIE 3245, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems VIII, (1 July 1998); doi: 10.1117/12.312293
Show Author Affiliations
Hans-Jochen Foth, Univ. of Kaiserslautern (Germany)
Thomas G. Barton, Univ. of Kaiserslautern (Germany)
Dirk H. Meyer, Univ. of Kaiserslautern (Germany)
Adriaen Postel, Univ. of Kaiserslautern (Germany)


Published in SPIE Proceedings Vol. 3245:
Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems VIII
Graham M. Watson; Reza S. Malek; Aaron P. Perlmutter; Penny J. Smalley; Sharon L. Thomsen; Harvey Lui; Lawrence S. Bass; R. Rox Anderson; Lou Reinisch; C. Gaelyn Garrett; Kenneth Eugene Bartels; Lloyd P. Tate; R. Rox Anderson; Kenneth Eugene Bartels; Lawrence S. Bass; C. Gaelyn Garrett; Kenton W. Gregory; Harvey Lui; Reza S. Malek; Aaron P. Perlmutter; Lou Reinisch; Penny J. Smalley; Lloyd P. Tate; Sharon L. Thomsen; Graham M. Watson, Editor(s)

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