Laser ablation of aqueous solutions with spatially homogeneous and heterogeneous absorption

Rinat Esenaliev, A. A. Karabutov, N. B. Podymova, V. S. Letokhov

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

The ablation efficiency of aqueous solutions with different concentrations and spatially homogeneous (CuCl2 solution) and heterogeneous (ink solution) absorption was studied as a function of the pulse-energy fluence (Nd:YAG laser, λ=1064 nm, τp = 20 ns). The latter was varied over a wide range from 0.15 J/cm2 to 8.00 J/cm2. The ablation threshold of solutions with heterogeneous absorption was found to be much lower (3 to 4 times) than the ablation threshold of solutions with homogeneous absorption and with the same average absorption coefficient. The ablation efficiency of heterogeneous solutions was higher by more than an order of magnitude. It was found that the ablation efficiency increases drastically for both types of solutions as the pulse energy fluence was raised to exceed the ablation threshold by 2 or 3 times. At such energy fluences, along with small droplets, larger droplets (1.5-2 mm cross section) could be ejected. This points to the ablation of solutions being affected by a hydrodynamic shock formed as a result of the pulsed recoil pressure excerted by the ablation products. The differences between the ablation processes for solutions with homogeneous and heterogeneous absorption as well as the hydrodynamic destruction at high energy fluences are discussed.

Original languageEnglish (US)
Pages (from-to)73-81
Number of pages9
JournalApplied Physics B Laser and Optics
Volume59
Issue number1
DOIs
StatePublished - Jul 1994
Externally publishedYes

Fingerprint

Laser ablation
Ablation
laser ablation
ablation
aqueous solutions
fluence
thresholds
Hydrodynamics
hydrodynamics
energy
inks
pulses
Ink
destruction
YAG lasers
Laser pulses
absorptivity
shock
Lasers
cross sections

Keywords

  • 79.20.Ds
  • 83.70.Gp
  • 83.70.Hq

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy (miscellaneous)

Cite this

Laser ablation of aqueous solutions with spatially homogeneous and heterogeneous absorption. / Esenaliev, Rinat; Karabutov, A. A.; Podymova, N. B.; Letokhov, V. S.

In: Applied Physics B Laser and Optics, Vol. 59, No. 1, 07.1994, p. 73-81.

Research output: Contribution to journalArticle

Esenaliev, Rinat ; Karabutov, A. A. ; Podymova, N. B. ; Letokhov, V. S. / Laser ablation of aqueous solutions with spatially homogeneous and heterogeneous absorption. In: Applied Physics B Laser and Optics. 1994 ; Vol. 59, No. 1. pp. 73-81.
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