Tuning of hybrid oligomers via femtosecond laser reshaping at nanoscale

Here, we propose a novel type of hybrid oligomers consisting of asymmetric metal-dielectric nan-odimers which have magnetic Fano resonances in the visible range. We numerically show that the profile of this Fano resonance and its position can be changed by precise femtosecond laser reshaping of metal nanoparticles in the nanodimers.