Brazing of materials with high oxygen affinity, such as aluminum alloys, requires the removal of surface oxides. This is commonly achieved using chemical fluxes. The approach described here utilizes IR-pulsed laser radiation at a pulse duration of 45 ns to remove the oxide layer. To prevent reoxidation, an oxygen-free atmosphere is used by introducing monosilane (SiH4) into the process chamber, which binds the oxygen molecules. The laser-induced surface structuring that occurs during oxide removal of aluminum alloy EN AW-6082 was investigated. Pulse energies between 60 – 300 μJ and different pulse overlaps between 0 – 90 \% were analyzed for topography and roughness based on the process atmosphere. The results suggest that the roughness increases significantly only at 90 \% overlap. Additionally, laser structuring with high energy and overlap in the presence of O2 results in a porous surface layer, while in the absence of O 2, it leads to pillar formation with higher roughness.