Bergner, K.K.BergnerSeyfarth, B.B.SeyfarthKumkar, M.M.KumkarTünnermann, A.A.TünnermannNolte, S.S.Nolte2022-03-132022-03-132016https://publica.fraunhofer.de/handle/publica/39552310.1364/CLEO_AT.2016.ATu4K.1Time-resolved in-situ microscopy is used to gain insights for tailoring material modifications inside a transparent material. The types of modifications are linked to the free electron densities within the laser-induced plasma. Densities below 1019 cm-3 lead to defect states and higher densities around 1020 cm-3 to disruptions and cracks. In this process the plasma ignition and densification crucially depends on the pulse duration.enconference paper