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Proceedings Paper

Bulk modification and damage in fused silica induced by femtosecond pulses
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Paper Abstract

We report experimental observation of modification and damage in bulk of fused silica induced by intense multiple femtosecond pulses. At power levels several times exceeding critical power for self-focusing the modification is in the form of some permanent changes inside the material and these effects are closely correlated with the beam filamentation process. Longer distances of propagation and much higher pulse energies produce bulk damage in the form of scattering zones. The formation of damage in anti-reflective-coated fused silica windows is also reported. Numerical simulations involving self-focusing, multiphoton absorption and permanent change of the refractive index of the bulk material were found to be in agreement with the experimental results.

Paper Details

Date Published: 21 February 2005
PDF: 13 pages
Proc. SPIE 5647, Laser-Induced Damage in Optical Materials: 2004, (21 February 2005); doi: 10.1117/12.584878
Show Author Affiliations
Viaceslav Kudriasov, Vilnius Univ. (Lithuania)
Eugenijus Gaizauskas, Vilnius Univ. (Lithuania)
Rimantas Grigonis, Vilnius Univ. (Lithuania)
Valdas Sirutkaitis, Vilnius Univ. (Lithuania)


Published in SPIE Proceedings Vol. 5647:
Laser-Induced Damage in Optical Materials: 2004
Gregory J. Exarhos; Arthur H. Guenther; Norbert Kaiser; Keith L. Lewis; M. J. Soileau; Christopher J. Stolz, Editor(s)

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