Applied Physics A

, Volume 80, Issue 3, pp 493–496 | Cite as

Nanostructuring of surfaces by ultra-short laser pulses

  • K. Vestentoft
  • J.A. Olesen
  • B.H. Christensen
  • P. Balling
Rapid communication

Abstract

Nanostructuring of an extended surface area is performed by ultra-short-pulse laser ablation in the low-fluence regime. A layer of micrometer-sized quartz spheres is used as a lens array in direct contact with the sample. The thickness of a transparent spacer layer under the spheres is adjusted so that the sample is struck by an array of well-focused spots. The threshold character of the ablation process allows the formation of sub-diffraction-limited structures, down to 500-nm holes with 800-nm light. The deposition of the lens array directly on the surface makes the technique broadly applicable, also to samples that show great variations in height.

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Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  • K. Vestentoft
    • 1
  • J.A. Olesen
    • 1
  • B.H. Christensen
    • 1
  • P. Balling
    • 1
  1. 1.Department of Physics and AstronomyUniversity of AarhusAarhus CDenmark

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