The generation of laser-induced periodic surface structures (LIPSS) using femtosecond lasers facilitates the engineering of material surfaces with tailored functional properties. Numerous aspects of their complex formation process are still under debate, despite intensive theoretical and experimental…
Bulk metallic glasses (BMG) are amorphous metal alloys known for their unique physical and mechanical properties. In the present study, the formation of femtosecond (fs) laser-induced periodic surface structures (LIPSS) on the Zr-based BMGs Zr46Cu46Al8, Zr61Cu25Al12Ti2, Zr52.5Cu17.9Al10Ni14.6Ti5 (Vit105)…
Surface nanostructuring enables the manipulation of many essential surface properties. With the recent rapid advancements in laser technology, a contactless large‐area processing at rates of up to m 2 s −1 becomes feasible that allows new industrial applications in medicine, optics, tribology, biology,…
The formation and properties of laser-induced periodic surface structures (LIPSS) were investigated upon fs-laser irradiation of fused silica at different initial substrate temperatures, TS. For substrate heating between room temperature, TRT, and TS = 1200 °C, a continuous wave CO₂ laser was used as…
The optical characterization of Laser-induced periodic surface structures LIPSS was studied on polished stainless steel surfaces following irradiation with static linearly polarized fs-laser pulses at a pulse duration = 300fs, a laser wavelength = 1025nm, laser fluences F = 0.8, 1.7, 2.4, 3.4 and 6.6J/cm2…
In der vorliegenden Arbeit wird der Einfluss einer schnellen, räumlich und zeitlich definierten Änderung (bis in den kHz-Bereich) des Polarisationszustandes der CO2-Laserstrahlung („Dynamische Polarisation“ DP) auf die dynamischen Prozesse im Wechselwirkungsvolumen beim CO2-Laserstrahlschweißen untersucht.…