Porcine Skin Thermal Response to Near-IR Lasers Using a Fast Infrared Camera
Abstract
We have measured the minimum visible lesion (MVL) thresholds for porcine skin and determined the ED(50) for exposures at 1314 nm for 0.35 ms laser pulses. An in-vivo pigmented animal model, Yucatan mini-pig (Sus scrofa domestica), was used in this study. We also have measured the 2-D thermal response using a high-speed (100 frames per second) infrared camera for single-pulse temperature recordings for Gaussian beams of 1 mm diameter. In Vitro samples of the same pig skin were used for measurements of the optical properties (absorption coefficient, mu(sub a), and reduced scattering coefficient mu(sub s)) as a function of wavelength around 1315 nm wavelength. A measured surface temperature distribution for one IR laser pulse of 0.37J at a spot size of 1.3 mm diameter gave approximately a 43 degrees C rise at a hot spot. Computed temperature distributions as a function of time and space are presented and compared with the measured surface temperatures.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2004
- Accession Number
- ADP020046
Entities
People
- A. J. Welch
- Ben Rockwell
- Chris Condit
- Clarence Cain
- David Stolarski
- Kevin Stockton
- Kurt Schuster
- Sergey Telenkov
- Thomas Milner
- William Roach
Organizations
- Northrop Grumman