Nonlinear waves generated on liquid silicon layer by femtosecond laser pulses

S. Lugomer, A. Maksimović, Z. Geretovszky, T. Szörényi

Research output: Article

3 Citations (Scopus)

Abstract

Two-dimensional nonlinear waves are generated by multipulse femtosecond ultraviolet laser irradiation of silicon above the ablation threshold. The train of 120-190 pulses generates the unidirectional cnoidal-like waves as well as the Y- and X-type configurations. In the region of high laser intensity, the interaction of line solitary-like waves give rise to the complex network structure. For 200 ≤ N < 220, the transition from stable into unstable waves takes place. At the critical number of pulses (≥230), the catastrophic destruction of cnoidal-like and solitary-like waves, takes place. Thus, the number of pulses plays the role of the control parameter. The stable cnoidal-like and solitary-like waves in a thin layer of molten silicon are reproduced by using the Kadomtsev-Petviashvili equation with negative dispersion (KP-II), and the unstable ones by using the KP-I equation with positive dispersion.

Original languageEnglish
Pages (from-to)588-599
Number of pages12
JournalApplied Surface Science
Volume285
Issue numberPARTB
DOIs
Publication statusPublished - nov. 15 2013

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ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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