Large area ion beam sputtered dielectric ultrafast mirrors for petawatt laser beamlines

0557025 - FZÚ 2023 RIV US eng J - Journal Article
Willemsen, T. - Chaulagain, Uddhab P. - Havlíčková, Irena - Borneis, Stefan - Ebert, W. - Ehlers, H. - Gauch, M. - Groß, T. - Kramer, Daniel - Laštovička, Tomáš - Nejdl, Jaroslav - Rus, Bedřich - Schrader, K. - Tolenis, Tomas - Vaněk, František - Velpula, Praveen K. - Weber, Stefan A.
Large area ion beam sputtered dielectric ultrafast mirrors for petawatt laser beamlines.
Optics Express. Roč. 30, č. 4 (2022), s. 6129-6141. ISSN 1094-4087
R&D Projects: GA MŠMT EF16_019/0000789; GA MŠMT EF15_003/0000449
EU Projects: European Commission(XE) 871161 - IMPULSE
Grant - others:OP VVV - ADONIS(XE) CZ.02.1.01/0.0/0.0/16_019/0000789; OP VVV - HiFi(XE) CZ.02.1.01/0.0/0.0/15_003/0000449
Institutional support: RVO:68378271
Keywords : ultrafast mirrors * coating * ion sputtering * lasers
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 3.8, year: 2022
Method of publishing: Open access
https://doi.org/10.1364/OE.452249

The latest advances in petawatt laser technology within the ELI Beamlines project have stimulated the development of large surface area dielectrically coated mirrors meeting all demanding requirements for guiding the compressed 30 J, 25 fs HAPLS laser beam at 10 Hz repetition rate and a center wavelength of 810 nm entirely in vacuum. We describe the production and evaluation of Ta2O5/HfO2/SiO2 ion beam sputtered coated (440 × 290 × 75) mm3 beam transport mirrors. No crazing was observed after thirty vacuum-air cycles. A laser induced damage threshold of 0.76 J/cm2 (fluence on mirror surface) was achieved and maintained at high shot rates
Permanent Link: http://hdl.handle.net/11104/0331147