| Title |
Low spatial frequency laser‑induced periodic surface structures in fused silica inscribed by widely tunable femtosecond laser pulses |
| Authors |
Navickas, Marius ; Grigutis, Robertas ; Jukna, Vytautas ; Tamošauskas, Gintaras ; Dubietis, Audrius |
| DOI |
10.1038/s41598-022-24771-9 |
| Full Text |
|
| Is Part of |
Scientific reports.. Berlin : Nature Portfolio. 2022, vol. 12, art. no. 20231, p. [1-7].. ISSN 2045-2322 |
| Keywords [eng] |
laser material processing ; laser induced periodic surface structures ; femtosecond |
| Abstract [eng] |
The formation and evolution of laser-induced periodic surface structures in fused silica under irradiation of widely tunable (in the 1–3 μ m range) linearly polarized femtosecond (200 fs) pulses was studied experimentally. The structures were inscribed in high fluence regime (exceeding the surface ablation threshold for a single pulse) and characterized by using scanning electron microscopy and two dimensional Fourier transform. The results revealed rapid (after irradiation with a few successive pulses) formation of periodic laser-induced periodic surface structures aligned parallel to laser polarization, whose period increases with increasing the inscription wavelength, obeying the lambda/n law. With further increase of number of pulses, the generated structures gradually reorganize into laser polarization-independent low spatial frequency annular structures associated with formation of the damage crater, which fully established after irradiation with a few tens of successive laser pulses. This particular evolution scenario was observed over the entire wavelength tuning range of incident pulses. |
| Published |
Berlin : Nature Portfolio |
| Type |
Journal article |
| Language |
English |
| Publication date |
2022 |
| CC license |
|
