Laser techniques for cultural heritage research case studies

G. Sliwiński; M. Jasińska; J. Bredal-Jørgensen; A. Kamińska; K. Komar; M. Sawczak

doi:10.1117/12.726906

13 March 2007 Laser techniques for cultural heritage research case studies

G. Sliwiński, M. Jasińska, J. Bredal-Jørgensen, A. Kamińska, K. Komar, M. Sawczak

Proceedings Volume 6604, 14th International School on Quantum Electronics: Laser Physics and Applications; 66040T (2007) https://doi.org/10.1117/12.726906
Event: 14th International School on Quantum Electronics: Laser Physics and Applications, 2006, Sunny Beach, Bulgaria

Abstract

Results of the recent application studies of laser-based techniques for conservation practice, carried out in the frames of research and conservation projects are presented and discussed. The Gotland Sandstone Project covers laser cleaning, spectroscopic techniques of the process monitoring and materials analysis. The post-processing effect is investigated by means of LIBS, colorimetry, SEM and XEDS in order to answer questions regarding encrustation removal, discoloration and alteration due to environmental pollution and laser interaction, respectively. The cleaning is monitored acoustically. Slight differences in stone yellowing are revealed when applying laser in air or pure N₂ environment which is ascribed to material oxidation and partial combustion of surface remnants due to presence of O₂ contributing to the final effect of laser cleaning. Results of microscopic observation are supported by the presence of elements S, Al, Ca, and C which prevail in crust. In case of restoration of the historical documents on paper the ablative cleaning and the nearly nondestructive identification and composition analysis of surface layers such as contaminants, substrate and pigments are performed. Spectra obtained by means of the LIPS technique for historical, originally contaminated and also artificially soiled model samples reveal reach structures. The emission lines of Ca, Na, K, Al and Fe are ascribed to contaminants because of intensities decreasing with prolonged surface irradiation during laser cleaning. Bands of Ti and Ba correspond to white pigments (TiO₂ and BaSO₄) in the paper and are confirmed by the Raman spectra as well. For identification of historical pigments the reference measurements on model substrates are performed, too.

Citation Download Citation

G. Sliwiński, M. Jasińska, J. Bredal-Jørgensen, A. Kamińska, K. Komar, and M. Sawczak "Laser techniques for cultural heritage research case studies", Proc. SPIE 6604, 14th International School on Quantum Electronics: Laser Physics and Applications, 66040T (13 March 2007); https://doi.org/10.1117/12.726906

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
11 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Calcium

Iron

Laser induced plasma spectroscopy

Aluminum

Silicon

Laser irradiation

Resistance

Show All Keywords

Keywords/Phrases

Search In:

Publication Years