Lasing at K Points of a Honeycomb Plasmonic Lattice
| Autor: | Tommi K. Hakala, Aaro I. Väkeväinen, Rui Guo, Päivi Törmä, Marek Nečada |
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| Přispěvatelé: | Department of Applied Physics, Quantum Dynamics, Aalto-yliopisto, Aalto University |
| Rok vydání: | 2019 |
| Předmět: |
Physics
ta114 Condensed Matter - Mesoscale and Nanoscale Physics Condensed matter physics FOS: Physical sciences Physics::Optics General Physics and Astronomy Polarization (waves) 01 natural sciences Brillouin zone Reciprocal lattice Energy minimum Lattice (order) Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences Singlet state 010306 general physics Lasing threshold Plasmon Optics (physics.optics) Physics - Optics |
| Zdroj: | Physical Review Letters. 122 |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/physrevlett.122.013901 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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