Abstract
A scanning laser beam can be used to heat selectively a target material in a wide variety of situations such as laser annealing, materials processing, or laser thermal recording. This report presents a general analytic solution to the heat equation which describes the temperature rise produced by a scanning Gaussian laser beam absorbed by any uniform solid. The solution is given in normalized coordinates so that it is independent of the particular dimensions of the beam and target. It is found that the normalized temperature distribution depends only on the ratio of the scan velocity to the rate of heat diffusion in the solid and the ratio of the beam diameter to the absorption depth.
© 1983 Optical Society of America
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