Extended Data Fig. 1: Recovering plasmonic resonances with HVG excitations in a weaker coupling case compared with Fig. 3.
From: High-order virtual gain for optical loss compensation in plasmonic metamaterials
(a) Polarizations (\(\widetilde{{\rm{p}}}\) and \({\widetilde{{\rm{p}}}}_{n}\)) and (b) transmittances \((\widetilde{T}\) and \({\widetilde{T}}_{n}\)) under excitation of real frequency and different orders of HVG. The virtual gains with different \(\beta\) are displayed in the inset. (c) The temporal evolutions of polarizations \({\widetilde{{\rm{p}}}}_{n}\left(\widetilde{\omega },t\right)\) for n = 1, 2, and 3. The spectra shown in (a) are selected at the moments indicated by the dashed lines in (c).
