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20 June 2021 Investigation of laser-induced damage to historical paint during Raman analysis
Maria Amelia Suzuki, Yu Li, Yuda Gu, Chi Shing Cheung, Cristiano Riminesi, Haida Liang
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Proceedings Volume 11784, Optics for Arts, Architecture, and Archaeology VIII; 117840N (2021) https://doi.org/10.1117/12.2593925
Event: SPIE Optical Metrology, 2021, Online Only
Abstract
Increased availability and use of ‘non-invasive’ analytical techniques in recent years, have called into question traditional assumptions of non-invasiveness of laser-based techniques and latest research developments have shown that it is essential to assess the extent of it for Raman spectroscopy, as particular compounds such as pigments may be highly altered/damaged upon laser radiation even at low laser intensity. In the present research, damage processes of oil paintings with historical pigments under CW lasers, with different excitation wavelength, laser intensity and fluence, are investigated with a monitoring set-up combining Raman spectroscopy, VIS-NIR reflectance spectroscopy and IR thermography.
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Maria Amelia Suzuki, Yu Li, Yuda Gu, Chi Shing Cheung, Cristiano Riminesi, and Haida Liang "Investigation of laser-induced damage to historical paint during Raman analysis", Proc. SPIE 11784, Optics for Arts, Architecture, and Archaeology VIII, 117840N (20 June 2021); https://doi.org/10.1117/12.2593925
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KEYWORDS
Raman spectroscopy
Laser induced damage
Continuous wave operation
Lithium
Near infrared
Visible radiation
Molecular spectroscopy
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