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Journal of Biomedical Optics • Open Access

Infrared skin damage thresholds from 1319-nm continuous-wave laser exposures
Author(s): Jeffrey W. Oliver; Rebecca L. Vincelette; Gary D. Noojin; Clifton D. Clark; Corey A. Harbert; Kurt J. Schuster; Aurora D. Shingledecker; Semih S. Kumru; Justin Maughan; Naomi Kitzis; Gavin D. Buffington; David J. Stolarski; Robert J. Thomas

Paper Abstract

A series of experiments were conducted in vivo using Yucatan miniature pigs (Sus scrofa domestica) to determine thermal damage thresholds to the skin from 1319-nm continuous-wave Nd:YAG laser irradiation. Experiments employed exposure durations of 0.25, 1.0, 2.5, and 10 s and beam diameters of ∼0.6 and 1 cm. Thermal imagery data provided a time-dependent surface temperature response from the laser. A damage endpoint of fifty percent probability of a minimally visible effect was used to determine threshold for damage at 1 and 24 h postexposure. Predicted thermal response and damage thresholds are compared with a numerical model of optical-thermal interaction. Resultant trends with respect to exposure duration and beam diameter are compared with current standardized exposure limits for laser safety. Mathematical modeling agreed well with experimental data, predicting that though laser safety standards are sufficient for exposures <10  s , they may become less safe for very long exposures.

Paper Details

Date Published: 16 December 2013
PDF: 10 pages
J. Biomed. Opt. 18(12) 125002 doi: 10.1117/1.JBO.18.12.125002
Published in: Journal of Biomedical Optics Volume 18, Issue 12
Show Author Affiliations
Jeffrey W. Oliver, Air Force Research Lab. (United States)
Rebecca L. Vincelette, TASC, Inc. (United States)
Gary D. Noojin, TASC, Inc. (United States)
Clifton D. Clark, TASC, Inc. (United States)
Corey A. Harbert, TASC, Inc. (United States)
Kurt J. Schuster, TASC, Inc. (United States)
Aurora D. Shingledecker, TASC, Inc. (United States)
Semih S. Kumru, Air Force Research Lab. (United States)
Justin Maughan, Fort Hays State Univ. (United States)
Naomi Kitzis, Fort Hays State Univ. (United States)
Gavin D. Buffington, Fort Hays State Univ. (United States)
David J. Stolarski, TASC, Inc. (United States)
Robert J. Thomas, Air Force Research Lab. (United States)


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