Special Section on Laser Damage III

Laser-induced damage threshold tests of ultrafast multilayer dielectric coatings in various environmental conditions relevant for operation of ELI beamlines laser systems

[+] Author Affiliations
Michal Ďurák, Praveen Kumar Velpula, Daniel Kramer, Josef Cupal, Tomáš Medřík, Jan Hřebíček, Jiří Golasowski, Davorin Peceli, Michaela Kozlová, Bedřich Rus

Institute of Physics, Czech Academy of Sciences, Na Slovance 2, 18221 Prague 8, Czech Republic

Opt. Eng. 56(1), 011024 (Nov 04, 2016). doi:10.1117/1.OE.56.1.011024
History: Received June 1, 2016; Accepted October 17, 2016
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Abstract.  Increasing the laser-induced damage resistance of optical components is one of the major challenges in the development of Peta-watt (PW) class laser systems. The extreme light infrastructure (ELI) beamlines project will provide ultrafast laser systems with peak powers up to 10 PW available every minute and PW class beams at 10 Hz complemented by a 5-TW, 1-kHz beamline. Sustainable performance of PW class laser systems relies on the durability of the employed optical components. As part of an effort to evaluate the damage resistance of components utilized in ELI beamlines systems, damage thresholds of several optical multilayer dielectric coatings were measured with different laser parameters and in different environments. Three coatings were tested with 10 Hz and 1 kHz pulse repetition rates, and the effect of a cleaning treatment on their damage resistance was examined. To explore the damage threshold behavior at different vacuum levels, one coating was subject to tests at various residual gas pressures. No change of damage threshold in a high vacuum with respect to ambient pressure was recorded. The effect of the cleaning treatment was found to be inconsistent, suggesting that development of the optimal cleaning treatment for a given coating requires consideration of its specific properties.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Michal Ďurák ; Praveen Kumar Velpula ; Daniel Kramer ; Josef Cupal ; Tomáš Medřík, et al.
"Laser-induced damage threshold tests of ultrafast multilayer dielectric coatings in various environmental conditions relevant for operation of ELI beamlines laser systems", Opt. Eng. 56(1), 011024 (Nov 04, 2016). ; http://dx.doi.org/10.1117/1.OE.56.1.011024


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