Czyszczenie laserem wybranych powierzchni kamiennych Grobu Nieznanego Żołnierza w Warszawie
Laser Cleaning of Select Stone Surfaces of the Tomb of the Unknown Soldier in Warsaw

Summary/Abstract: The article discusses the use (the first in Poland) of the Nd:YAG laser with Q modulation for the purposes of cleaning the surface of select stone elements of the Tomb of the Unknown Soldier in Warsaw. The authors consider the impact of the parameters of the laser beam upon the rapidity of the process and the thickness of the removed hard, black layers which amassed for the past several decades. The laser method of cleaning surfaces is the most effective and efficient, and, at the same time, the least aggressive and the most environment–friendly technique. It guarantees a selective removal of layers from the polluted surface and is highly convenient, especially in the case of conservation performed on high scaffolding.

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