Figure 1
From: Controllable Plasmonic Nanostructures induced by Dual-wavelength Femtosecond Laser Irradiation
(a) Schematic of the experimental setup. (b–k) SEM images of ablated structures imprinted by a single pulse of a dual-wavelength fs laser. The pulse fluence increased from 0.01 to 0.055 μJ with a step length of 0.005 μJ. All of the images share the same scale bar.
