AI Article Synopsis
- Hyperbolic metamaterials improve spontaneous emission efficiency, but optimal radiation-matter coupling occurs when the light source is placed inside these materials rather than outside.
- By incorporating the emitter within a silicon/silver periodic multilayer metamaterial, there is a threefold increase in the Purcell factor and broader bandwidth.
- The use of 1D gratings with triangular and rectangular profiles enables significant extraction of plasmonic modes into the far field, achieving a tenfold radiative enhancement at visible frequencies.
Article Abstract
Hyperbolic metamaterials can enhance spontaneous emission, but the radiation-matter coupling is not optimized if the light source is placed outside such media. We demonstrate a 3-fold improvement of the Purcell factor over its outer value and a significant enlargement in bandwidth by including the emitter within a Si/Ag periodic multilayer metamaterial. To extract the plasmonic modes of the structure into the far field we implement two types of 1D grating with triangular and rectangular profile, obtaining a 10-fold radiative enhancement at visible frequencies.
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| http://dx.doi.org/10.1364/OE.22.004301 | DOI Listing |
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