Hydrodynamic size distribution of gold nanoparticles controlled by repetition rate during pulsed laser ablation in water

▶ Nanoparticle generation by fs-laser ablation in water at variable repetition rates. ▶ Constant ablation efficiency between 100 and 5000 Hz. ▶ Polydispersity of the size distribution is reduced at higher repetition rates. ▶ Low repetition rates are more efficient for laser-induced fragmentation.