Magnetoplasmonic quasicrystals: an approach for multiband magneto-optical response

摘要: Nanostructured magneto-optical materials that sustain optical resonances provide an efficient way to control light via the magnetic field, which is of prime importance for telecommunication and sensing applications. However, their response usually narrowband due resonance character. Here, we demonstrate investigate a type magnetoplasmonic structure, or quasicrystal, demonstrates unique response. It consists dielectric film covered by thin gold layer perforated slits, forming Fibonacci-like binary sequence. The transverse Kerr effect (TMOKE) acquires controllable multiple plasmon-related resonances, resulting in over wide frequency range. In particular, experimentally studied samples, TMOKE are observed wavelength range from λ=780  nm λ=970  nm. Multiband valuable numerous nanophotonic applications, including sensing, light, all-optical magnetization, etc. spectroscopy also tool investigating peculiarities plasmonic quasicrystals.