Title: Hyperbolic Dispersion Dominant Regime Identified through Spontaneous Emission Variations near Metamaterial Interfaces,
Abstract: Surface plasmon polariton, hyberbolic dispersion of energy and momentum, and
emission interference provide opportunities to control photoluminescence
properties. However, the interplays between these regimes need to be understood
to take advantage of them in optoelectronic applications. Here, we investigate
broadband variations induced by hyperbolic metamaterial (HMM) multilayer
nanostructures on the spontaneous emission of selected organic chromophores.
Experimental and calculated spontaneous emission lifetimes are shown to vary
non-monotonously near HMM interfaces. With the SPP and interference dominant
regimes. With the HMM number of pairs used as the analysis parameter, the
lifetime is shown to be independent of the number of pairs in the surface
plasmon polaritons, and emission interference dominant regimes, while it
decreases in the Hyperbolic Dispersion dominant regime. We also show that the
spontaneous emission lifetime is similarly affected by transverse positive and
transverse negative HMMs. This work has broad implications on the rational
design of functional photonic surfaces to control the luminescence of
semiconductor chromophores.