Temperature alterations of infrared light absorption by cartilage and cornea under free-electron laser radiation.

Journal Article (Journal Article)

Like pure water, the water incorporated into cartilage and cornea tissue shows a pronounced dependence of the absorption coefficient on temperature. Alteration of the temperature by radiation with an IR free-electron laser was studied by use of a pulsed photothermal radiometric technique. A computation algorithm was modified to take into account the real IR absorption spectra of the tissue and the spectral sensitivity of the IR detector used. The absorption coefficients for several wavelengths within the 2.9- and 6.1-microm water absorption bands have been determined for various laser pulse energies. It is shown that the absorption coefficient for cartilage decreases at temperatures higher than 50 degrees C owing to thermal alterations of water-water and water-biopolymer interactions.

Full Text

Duke Authors

Cited Authors

  • Sobol, EN; Sviridov, AP; Kitai, MS; Edwards, GS

Published Date

  • May 2003

Published In

Volume / Issue

  • 42 / 13

Start / End Page

  • 2443 - 2449

PubMed ID

  • 12737481

Electronic International Standard Serial Number (EISSN)

  • 1539-4522

International Standard Serial Number (ISSN)

  • 1559-128X

Digital Object Identifier (DOI)

  • 10.1364/ao.42.002443


  • eng