Heating effects induced by a pulsed laser in a semi-infinite target in view of the theory of linear systems |
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| Authors: | A.F. Hassan M.M. El-Nicklawy M.K. El-Adawi E.M. Nasr A.A. Hemida O.A.Abd El-Ghaffar |
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| Affiliation: | aAFH, MME-N, EMM, AAH and OAAE-G are at the Faculty of Science, Helwan University, Cairo, Egypt;bMKE-A is at the Faculty of Education, Ain Shams University, Cairo, Egypt |
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| Abstract: | The two-dimensional Laplace integral transform technique is used to solve the problem of heating a semi-infinite target induced by the surface absorption of a laser pulse. Mathematical expressions for the surface temperature and the temperature profile within the target are obtained considering cooling and temperature-dependent absorption coefficient at the front surface. The linear behaviour of the system is found to be established for all cases except for that of temperature dependent surface absorptance. As an illustrative example, computations are carried out on Al, Cu, Ag and Au targets using an empirical formula for the temporal distribution of a measured laser pulse. |
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| Keywords: | laser heating laser material interaction |
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