Temperature Distribution in Different Materials Due to Short Pulse Laser Irradiation

Abstract

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.

Department(s)

Mechanical and Aerospace Engineering

Keywords and Phrases

Laser Irradiation; Heat - Transmission; Mechanical engineering

International Standard Serial Number (ISSN)

0145-7632

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2005 Taylor & Francis Group, All rights reserved.

Publication Date

01 Jan 2005

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