Electric and magnetic optical fields carry the same amount of energy. Nevertheless, the efficiency with which matter interacts with electric optical fields is commonly accepted to be at least 4 orders of magnitude higher than with magnetic optical fields [1]. Here we experimentally demonstrate that properly designed photonic nanoantennas (figure 1a and b) can selectively manipulate the magnetic versus electric emission of luminescent nanocrystals [2]. In particular, an enhancement of magnetic emission from trivalent europium-doped nanoparticles can only by observed in the vicinity of nanoantennas featuring a magnetic resonance [2,3].

© 2019 IEEE

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