Berlin 2018 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 29: Focussed Session: Metasurfaces I
HL 29.4: Talk
Wednesday, March 14, 2018, 16:15–16:30, EW 201
Manipulation of electric and magnetic dipole emission from Eu3+ with silicon metasurfaces — •Aleksandr Vaskin1, Soheila Mashhadi2, Natalia Noginova2, Katie. E. Chong3, Stefan Nanz4, Aimi Abass4, Ivan Fernandez-Corbaton4, Evgenia Rusak3,4, Mikhail A. Noginov2, Yuri S. Kivshar3, David Keene2, Carsten Rockstuhl4, Thomas Pertsch1, Dragomir Neshev3, and Isabelle Staude1 — 1Friedrich Schiller University Jena, Jena, Germany — 2Norfolk State University, Norfolk, USA — 3The Australian National University, Canberra, Australia — 4Karlsruhe Institute of Technology, Karlsruhe, Germany
Mie-resonant dielectric nanoparticles were theoretically predicted to provide a viable platform for enhancing both electric and magnetic dipole transitions. While the electric dipole transition enhancement by dielectric nanoparticles was experimentally demonstrated, the case of magnetic dipole transition remains to be explored. We study enhancement of spontaneous emission of Eu3+ ions featuring electric (at 610 nm) and magnetic-dominated (at 590 nm) transitions by Mie-resonant metasurfaces consisting of silicon nanocylinders. By fabricating a set of metasurfaces with nanocylinders of different diameter we sweep the spectral positions of the Mie resonances over the spectral range of the electric and magnetic dipole transitions. The samples were covered by a 40 nm-layer of polymer doped by Eu3+ compound. We observed an enhancement of the Eu3+ emission associated with the electric and magnetic-dominated dipole transitions. We further perform numerical simulations using two different approaches.