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Proceedings Paper

What time-resolved measurements tell us about femtosecond laser damage?
Author(s): Andrius Melninkaitis; Nerijus Šiaulys; Linas Smalakys; Balys Momgaudis; Julius Vaicenavičius; Simona Barkauskaitė; Valdas Sirutkaitis; Laurent Gallais; Stephane Guizard
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Paper Abstract

Time-resolved investigations of laser-matter interaction processes in dielectric coatings and bulk silica leading to laserinduced damage were performed with high temporal and spatial resolution. Distinct excitation geometries were used to study different aspects of laser matter interaction. Samples were irradiated at the pump fluence levels below and above their single shot laser-induced damage thresholds. The obtained results provide new insights about the sequence of interdependent processes. The fundamental differences between the so called 1-on-1 and S-on-1 damage morphologies are observed and discussed. New data of numerical simulations revealing the nonlinear properties of optical thin films are presented. Increased visibility in time resolved damage detection as well as observation of coherent oscillations in measured signals are introduced and discussed.

Paper Details

Date Published: 23 November 2015
PDF: 12 pages
Proc. SPIE 9632, Laser-Induced Damage in Optical Materials: 2015, 96320O (23 November 2015); doi: 10.1117/12.2195333
Show Author Affiliations
Andrius Melninkaitis, Vilnius Univ. (Lithuania)
Nerijus Šiaulys, Vilnius Univ. (Lithuania)
Linas Smalakys, Vilnius Univ. (Lithuania)
Balys Momgaudis, Vilnius Univ. (Lithuania)
Julius Vaicenavičius, Vilnius Univ. (Lithuania)
Simona Barkauskaitė, Vilnius Univ. (Lithuania)
Valdas Sirutkaitis, Vilnius Univ. (Lithuania)
Laurent Gallais, Aix Marseille Univ., Institut Fresnel, CNRS (France)
Stephane Guizard, Lab. des Solides Irradiés, CEA, Ecole Polytechnique (France)


Published in SPIE Proceedings Vol. 9632:
Laser-Induced Damage in Optical Materials: 2015
Gregory J. Exarhos; Vitaly E. Gruzdev; Joseph A. Menapace; Detlev Ristau; MJ Soileau, Editor(s)

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