Figure 2
From: Light-tunable Fano resonance in metal-dielectric multilayer structures

Results of pump-probe ATR measurements.
(a) Experimental (dots) and theoretical (solid curve) ATR spectra of a sample without pump irradiation. (b) Experimental ATR spectra in a narrower angle region measured without and with pump irradiation. The Fano resonance shifts to a lower angle under irradiation, while SPP resonance stays at the same position. (c) Results of systematic pumping experiments performed with various pumping power under H- and V-pump conditions. The pump power densities are estimated from the measured power and diameter of the pump laser beam.