Unidirectional Lasing from Template-Stripped Two-Dimensional Plasmonic Crystals

Ankun Yang, Zhongyang Li, Michael P. Knudson, Alexander J. Hryn, Weijia Wang, Koray Aydin, Teri W Odom

Research output: Contribution to journalArticle

54 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)11582-11588
Number of pages7
JournalACS Nano
Volume9
Issue number12
DOIs
Publication statusPublished - Oct 11 2015

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Keywords

  • plasmon nanolaser
  • plasmonic crystals
  • spaser
  • template stripping
  • unidirectional emission
  • wavelength tunability

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)
  • Physics and Astronomy(all)

Cite this

Yang, A., Li, Z., Knudson, M. P., Hryn, A. J., Wang, W., Aydin, K., & Odom, T. W. (2015). Unidirectional Lasing from Template-Stripped Two-Dimensional Plasmonic Crystals. ACS Nano, 9(12), 11582-11588. https://doi.org/10.1021/acsnano.5b05419