Lasing at K Points of a Honeycomb Plasmonic Lattice
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We study lasing at the high-symmetry points of the Brillouin zone in a honeycomb plasmonic lattice. We use symmetry arguments to define singlet and doublet modes at the K points of the reciprocal space. We experimentally demonstrate lasing at the K points that is based on plasmonic lattice modes and two-dimensional feedback. By comparing polarization properties to T-matrix simulations, we identify the lasing mode as one of the singlets with an energy minimum at the K point enabling feedback. Our results offer prospects for studies of topological lasing in radiatively coupled systems.
|Journal||Physical Review Letters|
|Publication status||Published - 2 Jan 2019|
|MoE publication type||A1 Journal article-refereed|