Selective delamination upon femtosecond laser ablation of ceramic surfaces

0505550 - FZÚ 2020 RIV US eng J - Journal Article
Kiel, F. - Bulgakova, Nadezhda M. - Ostendorf, A. - Gurevich, E.L.
Selective delamination upon femtosecond laser ablation of ceramic surfaces.
Physical Review Applied. Roč. 11, č. 2 (2019), s. 1-13, č. článku 024038. ISSN 2331-7019. E-ISSN 2331-7019
R&D Projects: GA MŠMT LO1602; GA MŠMT EF15_003/0000445; GA MŠMT EF15_006/0000674
Grant - others:OP VVV - BIATRI(XE) CZ.02.1.01/0.0/0.0/15_003/0000445; OP VVV - HiLASE-CoE(XE) CZ.02.1.01/0.0/0.0/15_006/0000674
Institutional support: RVO:68378271
Keywords : selective delamination of semitransparent materials * yttria-stabilized zirconia ceramics * femtosecond laser * surface ablation * delamination of a ceramics
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 4.194, year: 2019
Method of publishing: Limited access
https://doi.org/10.1103/physrevapplied.11.024038

We report on the experimental observation of selective delamination of semitransparent materials on the example of yttria-stabilized zirconia ceramics upon femtosecond laser processing of its surface with a low numerical aperture lens. The delamination of a ceramic layer of dozens of micrometers takes place as a side effect of surface processing and is observed above the surface ablation threshold. The onset of delamination (delamination threshold) depends on the degree of overlap of the irradiation spots from consecutive laser pulses upon beam scanning over material surface. Analysis of the delaminated layer indicates that the material undergoes melting on both of its surfaces. The mechanism of delamination is identified as a complex interplay between the optical response of laser-generated free-electron plasma and nonlinear effects upon laser beam propagation in semitransparent ceramics.
Permanent Link: http://hdl.handle.net/11104/0297030