Figure 6
From: Maximizing energy coupling to complex plasmonic devices by injecting light into eigenchannels
Maximal coupling to SPPs for a disordered array of slits. (a) Sample image derived from focused ion beam scanning. Scale bar: 5 μm. (b) Total field strength of the SPPs generated by the coupling of the incident waves to the eigenchannels (red circular dots). The SPP field strength was normalized by that of the normally incident plane wave. Eigenvalue distribution of the measured transmission matrix (blue square dots) and the corrected eigenvalues accounting for the phase-only wavefront control (green diamond dots) are plotted for comparison. Eigenvalues were normalized by the field strength of the SPPs for the normally incident plane wave. (c) SPP field strength map when the incident wave was experimentally coupled to the first eigenchannel. Scale bar: 5 μm.
