Applied Physics A

, Volume 53, Issue 3, pp 241–248

Blow-off of aluminium films

  • V. Schultze
  • M. Wagner
Surfaces And Multilayers

DOI: 10.1007/BF00324259

Cite this article as:
Schultze, V. & Wagner, M. Appl. Phys. A (1991) 53: 241. doi:10.1007/BF00324259

Abstract

The blow-off of Al targets from a transparent support by single pulses of intense laser irradiation through the support is investigated for target thicknesses up to some μm. The blow-off process is theoretically described by calculations of the phase front dynamics in the target, adopted from Harrach's analytical solutions for laser heating and burnthrough of opaque solid slabs. Experimentally two laser beam sources were used: a Nd:YAG laser with a Gaussian intensity profile and a Nd:Glass-laser system with a homogenized flat-top profile. Two types of removal mechanism could be identified. In the first mode (low laser intensities and/or thin targets) the target is completely molten and can easily be blown-off by the vapor originating at the target-support interface. In the second mode (high laser intensities and/or thick targets) superheating of the liquid Al or a burst of the remaining solid layer of the target occurs. In both cases in the second mode the blow-off process is characterized by higher vapor pressures.

PACS

42.55.Rz81.40Gh44.10.+i

Copyright information

© Springer-Verlag 1991

Authors and Affiliations

  • V. Schultze
    • 1
  • M. Wagner
    • 2
  1. 1.Physikalisch-Technisches InstitutJenaFed. Rep. Germany
  2. 2.Institut für FestkörperphysikFriedrich-Schiller-Universität JenaJenaFed. Rep. Germany