Fig. 6From: The two-wavelength laser cleaning methodology; theoretical background and examples from its application on CH objects and monuments with emphasis to the Athens Acropolis sculptures a Series of 1064 nm (lower line) and 355 nm (upper line) of spot irradiation tests to remove dark over-layers from plaster (1 pulse at various F), b Series of spot irradiation tests using the two laser beams simultaneously (1 pulse at various FIR/FUV ratios)Back to article page