2026-05-04T14:44:48Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/79262023-11-04T01:05:27Zcom_10259.4_2538com_10259.4_2477com_10259.4_106com_10259_2604com_10259.4_2551com_10259_5086com_10259.4_2502col_10259_7927col_10259.4_2552col_10259_7074
Repositorio Institucional de la Universidad de Burgos
author
Rahman, Md. Ashiqur
author
Fuente Leis, Germán F. de la
author
Carretero Díaz, José Miguel
author
Alonso Abad, Mª Pilar
author
Alonso Alcalde, Rodrigo
author
Chapoulie, Rémy
author
Schiavon, Nick
author
Angurel Lámban, Luis Alberto
2023-11-03T08:06:06Z
2023-11-03T08:06:06Z
2023-02
http://hdl.handle.net/10259/7926
10.3390/heritage6030132
2571-9408
The impact of wavelength and pulse duration in laser cleaning of hard blackish contaminants crust from archaeologically significant Pleistocene bone is investigated in this research. The objective is to determine the practical cleaning procedures and identify adequate laser parameters for cleaning archaeological bone from Sima de los Huesos (Spain) based on conservation and restoration perspectives. Bone surface cleaning was performed utilizing two Q-switched Nd:YAG lasers: subnanosecond pulsed lasers with emission wavelengths at 355 nm and 1064 nm, respectively, and a Yb:KGW femtosecond pulsed laser with an emission wavelength in the third harmonic at 343 nm. In all experiments, the laser beam scanning mode was applied to measure cleaning efficiency in removing contaminants and degradation products while assessing the underlying substrate surface damage. Several properties, including wavelength-dependent absorption, pulse repetition rate, and thermal properties of the material, are analyzed when evaluating the ability of these lasers to boost the cleaning efficiency of the deteriorated bone surface. Bone surface morphology and composition were studied and compared before and after laser irradiation, using Optical Microscopy, Scanning Electron Microscopy with Energy Dispersive X-ray Spectrometry (SEM-EDS), Fourier Transform Infrared Spectroscopy (FTIR), and X-ray Photoelectron Spectroscopy (XPS) characterization methods. The results indicate that 238-femtosecond UV laser irradiation with 2.37 TWcm−2 is significantly safer and more efficient toward surface contaminant desorption than sub-nanosecond laser irradiation. The results herein presented suggest that these types of fs lasers may be considered for realistic laser conservation of valuable historic and archaeological museum artifacts.
eng
Atribución 4.0 Internacional
Femtosecond laser
Sub-nanosecond laser
Cleaning
Pulse duration
Wavelength
Archaeological bone
Sima de los Huesos
Ultra-Short Pulse Laser Cleaning of Contaminated Pleistocene Bone: A Comprehensive Study on the Influence of Pulse Duration and Wavelength
info:eu-repo/semantics/article
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URL
https://riubu.ubu.es/bitstream/10259/7926/1/Rahman-heritage_2023.pdf
File
MD5
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application/pdf
Rahman-heritage_2023.pdf