Y thin films by ultrashort pulsed laser deposition for photocathode application

► We deposit Y thin films by pulsed laser ablation with 0.5 and 5 ps pulse durations. ► Y thin films deposition is interesting for photocathode application. ► Y thin films are well adherent to the substrate with a high abundance of nano-particles on the film surface. ► Nano-particles abundance decreases as a function of the laser fluence.