Optical damage of sputtered gold films irradiated with femtosecond laser pulses

R. Boedefeld; J. Schreiber; H. Gessner; Eberhard Welsch; Wolfgang Theobald; Thomas Feurer; Roland A. Sauerbrey

doi:10.1117/12.425075

12 April 2001 Optical damage of sputtered gold films irradiated with femtosecond laser pulses

R. Boedefeld, J. Schreiber, H. Gessner, Eberhard Welsch, Wolfgang Theobald, Thomas Feurer, Roland A. Sauerbrey

Proceedings Volume 4347, Laser-Induced Damage in Optical Materials: 2000; (2001) https://doi.org/10.1117/12.425075
Event: Laser-Induced Damage in Optical Materials: 2000, 2000, Boulder, CO, United States

Abstract

Multi-shot damage tests were performed of gold coated mirrors in the femtosecond and in the nanosecond laser pulse regime. Sputtered gold films from different suppliers of various thicknesses were investigated. Considerable differences in the optical quality and the damage threshold are reported. The best films withstand a maximum fluence of 0.7 J/cm² for 50-fs Ti:sapphire laser irradiation (804 nm) and 7 J/cm² for 8-ns Nd:YAG irradiation (1064 nm). For gold films with poor optical quality a permanent surface modification one order of magnitude below the damage threshold was observed.

Citation Download Citation

R. Boedefeld, J. Schreiber, H. Gessner, Eberhard Welsch, Wolfgang Theobald, Thomas Feurer, and Roland A. Sauerbrey "Optical damage of sputtered gold films irradiated with femtosecond laser pulses", Proc. SPIE 4347, Laser-Induced Damage in Optical Materials: 2000, (12 April 2001); https://doi.org/10.1117/12.425075

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