nm and 532 nm solid state laser treatment of biogenetical fibrous materials

There was the experimental indication that UV laser treatment does not lead to colorimetric alterations at 355 nm in analogy to visible radiation at 532 nm in contrast to 1064 nm [Rudolph et al. 2004, Kautek 2008]. In this new study, the extension to 213 nm radiation in comparison to 532 nm has been applied to a model paper such as additive-free cotton linters cellulose paper with no fillers and no sizing together with charcoal as a model contaminant.