Figure 2. Photoluminescence measurements of hyperbolic metamaterial.

(a) Experimentally obtained spontaneous emission lifetimes of the DCM dye as a function of emission wavelengths on HMM, control and reference sample and (b) Lifetime of dye on HMM normalized with respect to reference sample. The emission wavelengths are normalized with respect to the transition wavelength (548 nm) with negative and positive regions respectively represent the elliptical and hyperbolic dispersion.