39304 2017 eng 43815, 1 43815, 10 7 article Nature Publishing Group London, UK 1 -- -- -- Structural relaxation phenomena in binary and multicomponent lithium silicate glasses were studied upon irradiation with femtosecond (fs) laser pulses (800 nm central wavelength, 130 fs pulse duration) and subsequent thermal annealing experiments. Depending on the annealing temperature, micro-Raman spectroscopy analyses evidenced different relaxation behaviours, associated to bridging and non-bridging oxygen structures present in the glass network. The results indicate that the mobility of lithium ions is an important factor during the glass modification with fs-laser pulses. Quantitative phase contrast imaging (spatial light interference microscopy) revealed that these fs-laser induced structural modifications are closely related to local changes in the refractive index of the material. The results establish a promising strategy for tailoring fs-laser sensitivity of glasses through structural mobility. Scientific Reports 10.1038/srep43815 2045-2322 urn:nbn:de:kobv:b43-393045 18.04.2017 Creative Commons - Namensnennung 3.0 T. Seuthe A. Mermillod-Blondin M. Grehn Jörn Bonse L. Wondraczek M. Eberstein eng uncontrolled Femtosecond laser eng uncontrolled Silicate glasses eng uncontrolled Raman spectroscopy eng uncontrolled Structural relaxation eng uncontrolled Refractive index Ingenieurwissenschaften und zugeordnete Tätigkeiten Verlagsliteratur Datei für die Öffentlichkeit verfügbar ("Open Access") Wissenschaftliche Artikel der BAM Bundesanstalt für Materialforschung und -prüfung (BAM) https://opus4.kobv.de/opus4-bam/files/39304/2017-Seuthe_SciRep7_43815.pdf