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Proceedings Paper

Electromagnetic properties of tissue in the optical region
Author(s): K. M. Yaws; D. G. Mixon; W. P. Roach
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Paper Abstract

To properly assess skin damage caused by photonic exposure, the mechanisms of photon attenuation and subsequent heat production are investigated. Currently, voids exist in frequency specific electromagnetic properties such as the complex dielectric permittivity and conductivity necessary to define refractive index and attenuation values. We investigate these properties in several tissues such as blood, bone, skin, vitreous humor, cornea, retina and many others. Inside these tissues, exponential decrease in photon energy occurs due to attenuation. Because photon energy absorbed in tissue is expressed as heat in many instances, it follows that the dielectric properties of the material will also change as a function of the heating patterns as well as with frequency or wavelength. Conversely, changes in tissue thermal properties should change photon behavior as dispersion properties change. In our case we are concerned with existing data and theoretically determining dispersion properties over a large range of frequencies or wavelengths.

Paper Details

Date Published: 12 February 2007
PDF: 6 pages
Proc. SPIE 6435, Optical Interactions with Tissue and Cells XVIII, 643507 (12 February 2007); doi: 10.1117/12.715202
Show Author Affiliations
K. M. Yaws, Air Force Research Lab. (United States)
D. G. Mixon, Air Force Research Lab. (United States)
W. P. Roach, Air Force Research Lab. (United States)

Published in SPIE Proceedings Vol. 6435:
Optical Interactions with Tissue and Cells XVIII
Steven L. Jacques; William P. Roach, Editor(s)

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