Cylindrically and non-cylindrically symmetric expansion dynamics of tin microdroplets after ultrashort laser pulse impact

Tiago de Faria Pinto, Jan Mathijssen, Randy Meijer, Hao Zhang, Alex Bayerle, Dmitry Kurilovich, Oscar O. Versolato, Kjeld S.E. Eikema, Stefan Witte*

*Corresponding author for this work

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

In this work, the expansion dynamics of liquid tin micro-droplets irradiated by femtosecond laser pulses were investigated. The effects of laser pulse duration, energy, and polarization on ablation, cavitation, and spallation dynamics were studied using laser pulse durations ranging from 220 fs to 10 ps, with energies ranging from 1 to 5 mJ, for micro-droplets with an initial radius of 15 and 23 μ m. Using linearly polarized laser pulses, cylindrically asymmetric shock waves were produced, leading to novel non-symmetric target shapes, the asymmetry of which was studied as a function of laser pulse parameters and droplet size. A good qualitative agreement was obtained between smoothed-particle hydrodynamics simulations and high-resolution stroboscopic experimental data of the droplet deformation dynamics.

Original languageEnglish
Article number93
Pages (from-to)1-10
Number of pages10
JournalApplied Physics A: Materials Science and Processing
Volume127
Issue number2
Early online date12 Jan 2021
DOIs
Publication statusPublished - Feb 2021

Keywords

  • Extreme ultraviolet
  • Hydrodynamics
  • Tin
  • Ultrashort lasers

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