Abstract
A new mechanism has been identified for the interaction of high-power infrared radiation with metal surfaces. This mechanism is based on the occurrence of initial surface roughness, which by a stimulated process grows into a coherent periodic corrugation or “ripple” pattern, owing to a nonlinear interaction with surface plasmons. Once developed, this ripple pattern acts as an anti-reflective coating, enabling the full absorption of the incoming radiation on the metal surface. Evidence is given for the dynamics of this process in the case of CO2 laser treatment of metals like Hg, In, Sn, Al and Pb.
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References
F. Keilmann and Y. H. Bai, Appl. Phys A 29, 9 (1982).
F. Keilmann, Phys. Rev. Lett. 51, 2097 (1983).
For a recent review, see A. A. Maradudin, in Festkorperprobleme, edited by J. Treusch ( Vieweg, Braunschweig, 1981 ), Vol. 2T, pp. 62–116.
F. Keilmann, unpublished.
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© 1986 Martinus Nijhoff Publishers, Dordrecht
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Keilmann, F. (1986). Stimulated Absorption of C02 Laser Light on Metals. In: Draper, C.W., Mazzoldi, P. (eds) Laser Surface Treatment of Metals. NATO ASI Series, vol 115. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-4468-8_3
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DOI: https://doi.org/10.1007/978-94-009-4468-8_3
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-8489-5
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