This paper presents trade-off studies of encrustation removing from a relief slab, utilizing a laser emitting four wavelengths from UV to IR. The source of radiation was ReNOVALaser 2 device, generating radiation wavelengths of 1.064 micrometers , 0.532 micrometers , and 0.266 micrometers . The results of investigations are presented on a diagram showing ablation speed as a function of irradiation for four wavelengths.
Jan Marczak, Jan Marczak,
"Surface cleaning of artwork by UV, VIS, and IR pulse laser radiation", Proc. SPIE 4402, Laser Techniques and Systems in Art Conservation, (22 October 2001); doi: 10.1117/12.445663; https://doi.org/10.1117/12.445663