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Proceedings Paper

Ejection of glass rings during tightly focused femtosecond laser damage at a glass surface
Author(s): Jeffrey F. Herbstman; Steven M. Yalisove; Alan J. Hunt
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Paper Abstract

We observe a discontinuity in the scaling between the size of damage and the pulse energy for femtosecond laser pulses tightly focused at a glass surface. This discontinuity corresponds to the threshold for formation and ejection of rings of material surrounding the focus center. The mechanism for the generation of these structures appears distinct from that of the central holes and is ascribed to subsurface absorption leading to thermal expansion and shock wave formation.

Paper Details

Date Published: 30 December 2008
PDF: 8 pages
Proc. SPIE 7132, Laser-Induced Damage in Optical Materials: 2008, 713208 (30 December 2008); doi: 10.1117/12.804154
Show Author Affiliations
Jeffrey F. Herbstman, Univ. of Michigan (United States)
Steven M. Yalisove, Univ. of Michigan (United States)
Alan J. Hunt, Univ. of Michigan (United States)

Published in SPIE Proceedings Vol. 7132:
Laser-Induced Damage in Optical Materials: 2008
Gregory J. Exarhos; Detlev Ristau; M. J. Soileau; Christopher J. Stolz, Editor(s)

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