Temperature Distribution in Different Materials Due to Short Pulse Laser Irradiation
The purpose of this study is to analyze the heat-affected zone in materials such as meat samples, araldite resin-simulating tissue phantoms, and fiber composites irradiated using a mode-locked short pulse laser with a pulse width of 200 ps. The radial surface temperature profiles are compared with that of a continuous wave (CW) laser of the same average power. The short pulse laser results in a more localized heating than a continuous laser with a corresponding high peak temperature. A parametric study addressing the effect of pulse train frequency, material thickness, and amount of scatterers and absorbing agent in the medium and different initial sample temperatures is performed, and the measured temperature profiles are compared with the theoretical non-Fourier hyperbolic formulations and Fourier parabolic heat conduction formulations for both CW and pulsed laser cases.
A. Ogale et al., "Temperature Distribution in Different Materials Due to Short Pulse Laser Irradiation," Heat Transfer Engineering, Taylor & Francis Group, Jan 2005.
The definitive version is available at http://dx.doi.org/10.1080/01457630591003754
Mechanical and Aerospace Engineering
Keywords and Phrases
Laser Irradiation; Heat - Transmission; Mechanical engineering
Article - Journal
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