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Control of absorption with hyperbolic metamaterials
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) Spectra of measured absorption coefficients of DOTC-doped polymeric films deposited on glass (1, glass), silver film (2, Ag), Ag/MgF2 metamaterial with Ag as the top layer (3, MM-Ag), gold film (4, Au), one pair of Ag and MgF2 layers (5, MM-1P), and Ag/MgF2 metamaterial with MgF2 as the top layer (6, MM-MgF2). Inset: schematic of a lamellar Ag/MgF2 metamaterial. (b) Maximal absorption coefficients in samples 1-6 of (a) normalized to that in sample 1 (dye-doped film on glass); diamonds—experiment and squares—comsol simulation.

Image of FIG. 2.
FIG. 2.

(a) Calculated values of electric field (defined as ) in the dye-doped polymeric film deposited on the top of a lamellar Ag/MgF2 metamaterial with MgF2 on the top (left) and 50 nm silver film on glass (right). (b) Electric energy density profiles in samples of (a); 1—dye on the top of hyprepolic metamaterial and 2—on the top of Ag film; (c) corresponding effective absoption bands (retrieved from the calculated reflectance spectra); 1—on the top of hyperbolic metamaterial (with MgF2 as the top layer), 2—on the top of Ag film. Inset: electric energy density integrated over the thickness of the 80 nm dye-doped film in samples 1-6 of Fig. 1(a) plotted vs. corresponding enhancements of effective absorption coefficients.

Image of FIG. 3.
FIG. 3.

Angular-dependent absorption (normalized to unity at normal incidence) in the 80 nm dye-doped film deposited onto a hyperbolic metamaterial with MgF2 on top. Inset: dependence of absorption on electric energy density integrated over the film thickness.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Control of absorption with hyperbolic metamaterials