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Proceedings Paper

Influence of the beam-focus size on femtosecond laser-induced damage threshold in fused silica
Author(s): N. Sanner; B. Bussiere; O. Utéza; A. Leray; T. Itina; M. Sentis; J. Y. Natoli; M. Commandré
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Paper Abstract

In this work, spot-size dependence of surface femtosecond laser-induced damage threshold in fused silica is put in evidence when the damage reach the micrometer scale. Measurements of the threshold with various numerical apertures and different techniques are performed, revealing a noticeable threshold increase while decreasing the laser beam-focus size below ~10 μm. This unexpected result could be explained by the presence of micrometer-sized defects pre-existing in the SiO2 sample.

Paper Details

Date Published: 20 February 2008
PDF: 9 pages
Proc. SPIE 6881, Commercial and Biomedical Applications of Ultrafast Lasers VIII, 68810W (20 February 2008); doi: 10.1117/12.762767
Show Author Affiliations
N. Sanner, Lab. LP3 (France)
B. Bussiere, Lab. LP3 (France)
Amplitude Technologies (France)
Domaine Univ. de St-Jérôme (France)
O. Utéza, Lab. LP3 (France)
A. Leray, Lab. LP3 (France)
T. Itina, Lab. LP3 (France)
M. Sentis, Lab. LP3 (France)
J. Y. Natoli, Domaine Univ. de St-Jérôme (France)
M. Commandré, Domaine Univ. de St-Jérôme (France)


Published in SPIE Proceedings Vol. 6881:
Commercial and Biomedical Applications of Ultrafast Lasers VIII
Joseph Neev; Stefan Nolte; Alexander Heisterkamp; Christopher B. Schaffer, Editor(s)

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