This article is cited in 5 papers

Interaction of laser radiation with matter

Large-scale structures produced on metal surfaces by multiple laser pulses

N. A. Kirichenko

Wave Research Center of Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow

Abstract: A mathematical model is constructed to describe the formation of inhomogeneous surface structures 10—50 μm in height on metal surfaces exposed to repetitive laser pulses with the following parameters: pulse duration of ~20 ns, pulse repetition rate of ~10 kHz, pulse intensity in the range 10⁷—10⁸ W cm^-2 and beam diameter from 50 to 100 μm. The model takes into account melting of the metal and melt flow over a distorted surface. The surface profile amplitude evaluated in the model agrees with experimental data.

PACS: 42.62.Cf, 64.70.dj

Received: 18.04.2008
Revised: 05.08.2008

 English version: Quantum Electronics, 2009, 39:5, 442–448

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