Abstract
This chapter is devoted the physical mechanisms of damage of metals by laser pulses in different cases. In simplest case of shallow pool, the classification of melt removal is presented at different magnitudes of pulls duration and energy density. Analytical calculations are compared with numerical modeling and experiment. The specific mechanisms of removal of target material at short and ultra short laser pulses are considered. The importance of nonlinear conversion of laser radiation in cone radiation for material processing by femtoseconds pulses is described. The models of drilling of metals in waveguide regime of laser radiation are presented. The mechanism of control of pulsed metal welding are considered.
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Notes
- 1.
Below, for simplicity q is the absorbed radiation intensity.
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Gladush, G.G., Smurov, I. (2011). Physics of the Damage and Deep Melting of Metals by Laser Pulses. In: Physics of Laser Materials Processing. Springer Series in Materials Science, vol 146. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-19831-1_8
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