Abstract
Laser ablation of large surfaces requires a significant increase in the pulse repetition rate, fast and precise scanning of the laser beam and fast feedback control over the ablated surface layers. Here laser-induced breakdown spectroscopy (LIBS) as a diagnostic tool is combined with fast (up to 20 m.s-1) laser beam scanning over large surface areas in 250 kHz repetition rate laser ablation experiments. The experiments were conducted on samples of gilded surfaces painted over with raw umber acrylic and brass-based (with shellac medium) paints, and monitored by LIBS with the aim of removing the overpainting without damaging the gilding. The successful integration of in situ spectral line radiation measurements with fast scanning expands the capabilities of the technique to high throughput industrial-scale laser ablation, laser deposition of films and precise laser treatment of large surface areas.
| Original language | English |
|---|---|
| Title of host publication | Lasers in the Conservation of Artworks |
| Editors | M. Castillejo, P. Moreno, M. Oujja, R. Radvan & J. Ruiz |
| Place of Publication | The Netherlands |
| Publisher | Archetype Publications Ltd |
| Pages | 45-51 |
| Volume | 1 |
| Edition | 1st |
| ISBN (Print) | 9781904982876 |
| Publication status | Published - 2013 |