Investigations on cleaning of black crusted sandstone using different UV-pulsed lasersInvestigations on cleaning of black crusted sandstone using different UV-pulsed lasers Peer-Reviewed Journal Publication Δημοσίευση σε Περιοδικό με Κριτές 2015-11-012000enLaser cleaning of stone is mainly based on Nd:YAG laser radiation at λ=1 064 nm. Within an international co-operation, experimental studies concerning the application of various UV-wavelengths were carried out. The studies were performed using 355 nm (3rd harmonic of Nd:YAG), 308 nm (XeCl-Excimer) and 248 nm (KrF-Excimer) and in comparison 1 064 nm (Nd:YAG fundamental). Sandstone samples from the Dresden Zwinger (Germany), called Elbsandstein, covered by a superficial black crust were used for laser ablation rate studies. The ablation rates (mg per pulse) were measured with respect to the laser fluence.http://creativecommons.org/licenses/by/4.0/Journal of Cultural Heritage161s-64s Maravelaki Pagona Μαραβελακη Παγωνα Marakis, G. Zafiropulos, V. Stephan Klein Hildenhagen, Jens Klaus Dickmann Elsevier Deposition, Pulsed laser Laser deposition, Pulsed pulsed laser deposition deposition pulsed laser laser deposition pulsed