@article{ef68cba042ab4a82b6307617702af815,
title = "Unidirectional Lasing from Template-Stripped Two-Dimensional Plasmonic Crystals",
abstract = "Plasmon lasers support cavity structures with sizes below that of the diffraction limit. However, most plasmon-based lasers show bidirectional lasing emission or emission with limited far-field directionality and large radiative losses. Here, we report unidirectional lasing from ultrasmooth, template-stripped two-dimensional (2D) plasmonic crystals. Optically pumped 2D plasmonic crystals (Au or Ag) surrounded by dye molecules exhibited lasing in a single emission direction and their lasing wavelength could be tuned by modulating the dielectric environment. We found that 2D plasmonic crystals were an ideal architecture to screen how nanocavity unit-cell structure, metal material, and gain media affected the lasing response. We discovered that template-stripped strong plasmonic materials with cylindrical posts were an optimal cavity design for a unidirectional laser operating at room temperature.",
keywords = "plasmon nanolaser, plasmonic crystals, spaser, template stripping, unidirectional emission, wavelength tunability",
author = "Ankun Yang and Zhongyang Li and Knudson, {Michael P.} and Hryn, {Alexander J.} and Weijia Wang and Koray Aydin and Odom, {Teri W.}",
note = "Funding Information: This work was supported by the National Science Foundation (NSF) under DMR-1306514 (W.W., T.W.O) and DMR-1121262 (A.Y., M.P.K., T.W.O., K.A.). Z.L. gratefully acknowledges support from the Ryan Fellowship and the Northwestern University International Institute for Nanotechnology. Research for this paper was conducted with Government support under FA9550-11-C-0028 (M.P.K and A.J.H) and awarded by Department of Defense, Air Force Office of Scientific Research, National Defense Science and Engineering Graduate (NDSEG) Fellowship, 32 CFR 168a. This work utilized Northwestern University Micro/Nano Fabrication Facility (NUFAB), which is supported by the State of Illinois and Northwestern University. This work made use of the EPIC facility (NUANCE Center-Northwestern University), which has received support from the MRSEC program (NSF DMR-1121262) at the Materials Research Center, and the Nanoscale Science and Engineering Center (EEC-0118025/003), both programs of the National Science Foundation; the State of Illinois; and Northwestern University. This research was supported in part through the computational resources and staff contributions provided for 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. Publisher Copyright: {\textcopyright} 2015 American Chemical Society.",
year = "2015",
month = oct,
day = "11",
doi = "10.1021/acsnano.5b05419",
language = "English (US)",
volume = "9",
pages = "11582--11588",
journal = "ACS nano",
issn = "1936-0851",
publisher = "American Chemical Society",
number = "12",
}