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arXiv · 1810.04838

Lasing at the K-points of a honeycomb plasmonic lattice

Rui Guo·Marek Nečada·Tommi K. Hakala·Aaro I. Väkeväinen·Päivi Törmä
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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 $\Kp$-points of the reciprocal space. We experimentally demonstrate lasing at the $\Kp$-points \changed{that is based on plasmonic lattice modes and two-dimensional feedback}. By comparing polarization properties to \changed{$T$-matrix} simulations, we identify the lasing mode as one of the singlets with an energy minimum at the $\Kp$-point enabling feedback. Our results offer prospects for studies of topological lasing in radiatively coupled systems.

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Rui Guo, Marek Nečada, Tommi K. Hakala, Aaro I. Väkeväinen, Päivi Törmä. 2018-11-07. Lasing at the K-points of a honeycomb plasmonic lattice. https://doi.org/10.1103/physrevlett.122.013901

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