Nonlinear waves generated on liquid silicon layer by femtosecond laser pulses

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

Research output: Contribution to journalArticle

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

Fingerprint

Silicon
Ultrashort pulses
Liquids
Ultraviolet lasers
Complex networks
Laser beam effects
Ablation
Molten materials
Lasers

Keywords

  • Atomic force microscopy
  • Femtosecond laser interaction
  • Kadomtsev-Petviashvili equation
  • Nonlinear waves
  • Silicon surface

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

Cite this

Nonlinear waves generated on liquid silicon layer by femtosecond laser pulses. / Lugomer, S.; Maksimović, A.; Geretovszky, Z.; Szörényi, T.

In: Applied Surface Science, Vol. 285, No. PARTB, 15.11.2013, p. 588-599.

Research output: Contribution to journalArticle

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