Comparison of high power sputtered dielectric mirrors for PW laser

0572553 - FZÚ 2024 RIV US eng C - Conference Paper (international conference)
Willemsen, T. - Groß, T. - Gauch, M. - Ehlers, H. - Kramer, Daniel - Velpula, Praveen K. - Ebert, W.
Comparison of high power sputtered dielectric mirrors for PW laser.
Proceedings of SPIE. Vol. 12300. Bellingham: SPIE, 2022 - (Carr, C.; Ristau, D.; Menoni, C.), č. článku 123000H. ISSN 0277-786X.
[54th SPIE Laser Damage Symposium on Laser-Induced Damage in Optical Materials. Rochester (US), 18.09.2022-22.09.2022]
Institutional support: RVO:68378271
Keywords : dielectric mirrors * ion beam sputtering (IBS) * large sized optics * LIDT optimized designs * PW-application * ultra-short pulse laser * laser optics
OECD category: Optics (including laser optics and quantum optics)
https://www.spiedigitallibrary.org/conference-proceedings-of-spie/12300/2642134/Comparison-of-high-power-sputtered-dielectric-mirrors-for-PW-Laser/10.1117/12.2642134.short

Latest advances of high intensity laser facilities enable the beam transport of petawatt laser pulses and can provide novel fundamental insights in high energy plasma physics or laser fusion. The very high peak intensities put enormous demands on the required large sized optics. Beam transport mirrors reflect pulses with only several tens of fs and maintain their phase while providing best possible laser induced damage threshold. State of the art, such mirrors are mostly manufactured by thermal evaporation techniques as they provide a large and uniform deposition area. Their porous layer structure causes changing spectral characteristics and wavefront when vacuum-air cycled. Especially large sized mirrors can show crazing and thereby decrease up-time of PW beamlines. In contrast, sputtered layers are very compact and provide non changing characteristics.
Permanent Link: https://hdl.handle.net/11104/0343203