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. 2014 Jun 24;4:4969. doi: 10.1038/srep04969

Figure 1.

Figure 1

(a) Trace 1 – spectrum of the Purcell enhancement factor calculated as the function of Re{ε} (upper scale) for a multilayered hyperbolic metamaterial with Re{ε} = 1, Im{ε} = Im{ε} = 0.1 [14]. Trace 2 – Emission band of the DCM dye film deposited on glass (approximated by a Gaussian function). Trace 3 – predicted shift of the emission band of the same dye embedded into a hyperbolic metamaterial (Trace 3 ∝ Trace 1 × Trace 2); both emission spectra are normalized to unity. (b) Spectra of Re{ε} and Re{ε} in the hyperbolic metamaterial used in our experiment (calculated in the effective medium approximation for the filling factors discussed in the text and the material parameters available in the literature [18, 25]). The latter spectrum relates the values Re{ε} in the upper horizontal scale of Fig. 1a to the wavelengths in the lower horizontal scale. (Here ε and ε denote components of dielectric permittivity parallel and perpendicular to the metamaterial surface.)