@article{9c7f493df3b74418a32745cd708936a1,
title = "M-Point Lasing in Hexagonal and Honeycomb Plasmonic Lattices",
abstract = "This paper reports the observation of band-edge states at the high-symmetry M-point in the first Brillouin zone of hexagonal and honeycomb plasmonic nanoparticle (NP) lattices. The surface lattice resonance at the M-point (SLRM) of a hexagonal lattice results from asymmetric out-of-plane dipole coupling between NPs. In contrast to the hexagonal lattice, honeycomb lattices support two SLR modes at the M-point because of their non-Bravais nature: (1) a blue-shifted SLRM1 from the coupling of two distinct out-of-plane dipole LSP resonances, and (2) a red-shifted SLRM2 from in-plane dipole–dipole coupling. By incorporating organic dye solutions as gain media with Ag NP lattices, we achieved M-point lasing from both hexagonal and honeycomb lattices. Understanding coupling mechanisms at high-symmetry points in NP lattices with the same geometry but different unit cells is important to assess the prospects of topological states in plasmonic systems.",
keywords = "M-point, hexagonal lattice, honeycomb lattice, lattice plasmons, nanolaser, surface lattice resonances",
author = "Juarez, {Xitlali G.} and Ran Li and Jun Guan and Thaddeus Reese and Schaller, {Richard D.} and Odom, {Teri W.}",
note = "Funding Information: This work was supported by the National Science Foundation (NSF) under DMR-1904385 (X.G.J., R.L., T.W.O.) and the Vannevar Bush Faculty Fellowship from DOD under N00014-17-1-3023 (J.G. and T.W.O.). This work used the Northwestern University Micro/Nano Fabrication Facility (NUFAB) and EPIC facility of Northwestern University{\textquoteright}s NUANCE Center, which are supported by the Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource (ECCS-2025633), the International Institute for Nanotechnology (IIN), and Northwestern{\textquoteright}s Materials Research Science and Engineering Center (MRSEC; DMR-1720139). This research was supported in part by the Quest high performance computing facility at Northwestern University, which is jointly supported by the Office of the Provost, the Office for Research, and Northwestern University Information Technology. This research made use of the Pritzker Nanofabrication Facility at the University of Chicago, which receives partial support from the SHyNE Resource, a node of the National Science Foundation{\textquoteright}s National Nanotechnology Coordinated Infrastructure (NSF ECCS-2025633). Use of the Center for Nanoscale Materials, an Office of Science user facility, was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. Publisher Copyright: {\textcopyright} 2022 American Chemical Society",
year = "2022",
month = jan,
day = "19",
doi = "10.1021/acsphotonics.1c01618",
language = "English (US)",
volume = "9",
pages = "52--58",
journal = "ACS Photonics",
issn = "2330-4022",
publisher = "American Chemical Society",
number = "1",
}