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Proceedings Paper

Laser-induced alterations of the infrared light absorption by biological tissues: radiometric and spectroscopic measurements
Author(s): Emil N. Sobol; Alexander P. Sviridov; Moshe S. Kitai; Victor N. Bagratashvili; Jonathan M. Gilligan; Glenn S. Edwards
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Paper Abstract

The temperature alterations in the absorption coefficients of water in cartilage and cornea under laser radiation of an IR Free Electron Laser (FEL) were studied for several wavelengths near 2.9 and 6.1 μm water absorption bands using a pulsed photo-thermal radiometer (PPTR). A computation algorithm has been modified to take into account the real IR absorption spectra of the tissue and the spectral sensitivity of the IR detector used. The IR absorption spectra of cartilage and cornea have been also measured by the FTIR spectrometer. It is shown that the values of absorption obtained ising PPTR differ from that obtained by the spectrometer. The limitation and possible errors of two techniques used for have been discussed.

Paper Details

Date Published: 19 November 2003
PDF: 2 pages
Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); doi: 10.1117/12.530961
Show Author Affiliations
Emil N. Sobol, Institute of Laser and Information Technologies (Russia)
Alexander P. Sviridov, Institute of Laser and Information Technologies (Russia)
Moshe S. Kitai, Institute of Laser and Information Technologies (Russia)
Victor N. Bagratashvili, Institute of Laser and Information Technologies (Russia)
Jonathan M. Gilligan, Vanderbilt Univ. (United States)
Glenn S. Edwards, Duke Univ. (United States)


Published in SPIE Proceedings Vol. 4829:
19th Congress of the International Commission for Optics: Optics for the Quality of Life
Giancarlo C. Righini; Anna Consortini, Editor(s)

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