Comparative study of different wavelengths from IR to UV applied to clean sandstone

S Klein, T Stratoudaki, Y Marakis, V Zafiropulos, K Dickmann

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)


The dependency of ablation rate and wavelength is studied by means of an exemplary chosen sort of sandstone in order to determine the cleaning regime and the feasibility of different wavelengths for practical cleaning. Excimer laser radiation (KrF, XeCl) and Nd:YAG laser radiation are used for the ablation of the black crust and sandstone in two independent experiments with a constant number of pulses. The Nd:YAG wavelengths at 355 and 1064 nm show advantages in cleaning this particular type of sandstone. A slight color change of the cleaned sandstone is detected in the case of cleaning at 1064 nm.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalApplied Surface Science
Issue number1-2
Publication statusPublished - 30 Mar 2000
Externally publishedYes


  • laser cleaning
  • UV laser
  • sandstone
  • comparative study


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