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Proceedings Paper

Kinetics of water transfer and stress relaxation in cartilage heated with 1.56-um fiber laser
Author(s): Victor N. Bagratashvili; Alexander P. Sviridov; Emil N. Sobol; Alexander I. Omelchenko; Svetlana I. Tsypina; Valentin P. Gapontsev; Igor E. Samartsev; Felix I. Feldchtein; Roman V. Kuranov
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Paper Abstract

In this work we have used for the first time 1.56 micrometer fiber laser to study mechanisms of IR laser induced stress relaxation in cartilage. We have applied several in-situ monitoring techniques: local temperature measurements (IR radiometry and thermocouple), IR-light absorption, direct stress measurements, micro-balancing, visible light scattering and optical coherent tomography. We have measured temporal behavior of 1.56 micrometer laser light transmission through the cartilage sample at different intensities with synchronous temperature and stress monitoring. The observed bleaching effect (self-induced transparency) is caused by water release from irradiating zone, water evaporation from the cartilage surface and, also, by temperature shift and decrease of intensity of water absorption bands.

Paper Details

Date Published: 13 June 2000
PDF: 6 pages
Proc. SPIE 3914, Laser-Tissue Interaction XI: Photochemical, Photothermal, and Photomechanical, (13 June 2000); doi: 10.1117/12.388027
Show Author Affiliations
Victor N. Bagratashvili, Institute of Laser and Information Technologies (Russia)
Alexander P. Sviridov, Institute of Laser and Information Technologies (Russia)
Emil N. Sobol, Institute of Laser and Information Technologies (Russia)
Alexander I. Omelchenko, Institute of Laser and Information Technologies (Russia)
Svetlana I. Tsypina, Institute of Laser and Information Technologies (Russia)
Valentin P. Gapontsev, IRE Polus (Russia)
Igor E. Samartsev, IRE Polus (Russia)
Felix I. Feldchtein, Institute of Applied Physics (United States)
Roman V. Kuranov, Institute of Applied Physics (Russia)


Published in SPIE Proceedings Vol. 3914:
Laser-Tissue Interaction XI: Photochemical, Photothermal, and Photomechanical
Jeffrey O. Hollinger; Donald Dean Duncan; Jeffrey O. Hollinger; Donald Dean Duncan; Steven L. Jacques, Editor(s)

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