Elucidation of laser induced side-effects in Cultural Heritage applications; yellowing of stone and pigments’ discoloration

Contact Person(s):
Dr. Paraskevi Pouli

To elucidate and overcome unpleasant side-effects induced upon laser irradiation is a step forward for the establishment of laser restoration interventions. Pigments discoloration and yellowing of marble are investigated through series of irradiation tests on model simulated samples.

Research Topics
Laser Cleaning


  • Wavelength and pulse duration effects on laser induced changes on raw pigments used in paintings
    M. Oujja, M. Sanz, E. Rebollar, J. F. Marco, M. Castillejo, P. Pouli, S. Kogou, C. Fotakis, Spectrochimica Acta part A, 102, 7-14 , 2013

  • Practical issues in laser cleaning of stone and painted artefacts: optimization procedures and side effects
    P. Pouli, M. Oujja, M. Castillejo, Applied Physics A, 106, 447, 2012

  • Analytical Spectroscopic Investigation of Wavelength and Pulse Duration Effects on Laser-Induced Changes of Egg-Yolk-Based Tempera Paints
    M. Oujja, P. Pouli, C. Fotakis, C. Domingo, M. Castillejo, Applied Spectroscopy, 64, 528, 2010

  • Wavelength and pulse duration effects on laser induced changes on unvarnished aged tempera paints
    M. Oujja, P. Pouli, C. Fotakis, C. Domingo, M. Castillejo, Analytical and Bioanalytical Chemistry, submitted, 2009

  • The laser-induced discoloration of stonework; a comparative study on its origins and remedies
    P. Pouli, C. Fotakis, B. Hermosin, C. Saiz-Jimenez, C. Domingo, M. Oujja, M. Castillejo, Spectrochimica Acta part A, 71, 932, 2008

  • Characterization of Stone Cleaning by Nd:YAG Lasers with Different Pulse Duration
    L. Bartoli, P. Pouli, C. Fotakis, S. Siano, R. Salimbeni, Laser Chemistry, vol. 2006, Article ID 81750, 6 pages,. doi:10.1155/2006/81750, 2006

  • Nd:YAG Laser Double Wavelength Ablation Of Pollution Encrustation On Marble And Bonding Glues On Duplicated Painting Canvas
    S. Batishche, A. Englezis, T. Gorovets, A. Kouzmouk, U. Pilipenka, P. Pouli, H. Tatur, G. Totou, V. Ukhau, Applied Surface Science, 248, 264, 2005

  • Short Free Running Nd:YAG laser to clean different encrustation on Pentelic marble: procedure and evaluation of the effects
    P. Maravelaki-Kalaitzaki, V. Zafiropulos, P. Pouli, D. Anglos, C. Balas, R. Salimbeni, S. Siano, R. Pini, Journal of Cultural Heritage, 4, S77-S82, 2003

  • Comparative study on the application of the 1st and the 3rd harmonic of a Nd: YAG laser system to clean black encrustation on marble
    G. Marakis, P. Pouli, V. Zafiropoulos, P. Maravelaki-Kalaitzaki, Journal of Cultural Heritage, 4, S83, 2003

  • Yellowing effect and discoloration of pigments: Experimental and Theoretical studies
    V. Zafiropulos, C. Balas, A. Manousaki, G. Marakis, P. Maravelaki-Kalaitzaki, K. Melesanaki, P. Pouli, T. Stratoudaki, S. Klein, J. Hildenhagen, K. Dickmann, B. S. Luk’yanchuk, C. Mujat, A. Dogariu, Journal of Cultural Heritage, 4, S249, 2003

  • Studies towards a thorough understanding of the laser-induced discoloration mechanisms of medieval pigments
    P. Pouli, D.C. Emmony, C.E. Madden, I. Sutherland, Journal of Cultural Heritage, 4, S271, 2003

Project Members
Dr. Paraskevi Pouli

Last Updated:  24/1/2011