Lasing at K Points of a Honeycomb Plasmonic Lattice

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Original languageEnglish
Article number013901
Pages (from-to)1-6
JournalPhysical Review Letters
Volume122
Issue number1
Publication statusPublished - 2 Jan 2019
MoE publication typeA1 Journal article-refereed

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Abstract

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.

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