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In this work, we investigate silicon nanocavities to increase brightness and control directivity pattern in the near-IR wavelength range. Designed nanocavities consist of the silicon nanocylinder with Mie magnetic dipole resonance. Theoretically we predict that the Purcell factor can be enhanced by up to three orders of magnitude and consider directivity patterns. We use electron lithography and laser annealing methods to fabricate nanostructures. Experimentally, photoluminescence spectra are measured and demonstrated. We believe that results of this work can find its application in optical telecommunication systems.
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Vitaly Yaroshenko, Marina Obramenko, Alexander Goltaev, Ivan Mukhin, Dmitry Zuev, "Silicon nanoparticle for erbium ion emission control," Proc. SPIE 12131, Nanophotonics IX, 1213109 (19 September 2022); https://doi.org/10.1117/12.2619335