| Autor: |
Oliver JW; Air Force Research Laboratory, San Antonio, TX 78235-5148, USA., Stolarski DJ, Noojin GD, Hodnett HM, Harbert CA, Schuster KJ, Foltz MF, Kumru SS, Cain CP, Finkeldei CJ, Buffington GD, Noojin ID, Thomas RJ |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of biomedical optics [J Biomed Opt] 2010 Nov-Dec; Vol. 15 (6), pp. 065008. |
| DOI: |
10.1117/1.3523622 |
| Abstrakt: |
A series of experiments are conducted in vivo using Yucatan mini-pigs (Sus scrofa domestica) to determine thermal damage thresholds to the skin from 1940-nm continuous-wave thulium fiber laser irradiation. Experiments employ exposure durations from 10 ms to 10 s and beam diameters of approximately 4.8 to 18 mm. Thermal imagery data provide a time-dependent surface temperature response from the laser. A damage endpoint of minimally visible effect is employed 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. Results are compared with current exposure limits for laser safety. It is concluded that exposure limits should be based on data representative of large-beam exposures, where effects of radial diffusion are minimized for longer-duration damage thresholds. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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