Plasmonic bowtie nanolaser arrays

Jae Yong Suh, Chul Hoon Kim, Wei Zhou, Mark D. Huntington, Dick T. Co, Michael R. Wasielewski, Teri W. Odom

Research output: Contribution to journalArticle

170 Citations (Scopus)

Abstract

Plasmonic lasers exploit strong electromagnetic field confinement at dimensions well below the diffraction limit. However, lasing from an electromagnetic hot spot supported by discrete, coupled metal nanoparticles (NPs) has not been explicitly demonstrated to date. We present a new design for a room-temperature nanolaser based on three-dimensional (3D) Au bowtie NPs supported by an organic gain material. The extreme field compression, and thus ultrasmall mode volume, within the bowtie gaps produced laser oscillations at the localized plasmon resonance gap mode of the 3D bowties. Transient absorption measurements confirmed ultrafast resonant energy transfer between photoexcited dye molecules and gap plasmons on the picosecond time scale. These plasmonic nanolasers are anticipated to be readily integrated into Si-based photonic devices, all-optical circuits, and nanoscale biosensors.

Original languageEnglish
Pages (from-to)5769-5774
Number of pages6
JournalNano letters
Volume12
Issue number11
DOIs
Publication statusPublished - Nov 14 2012

Keywords

  • Localized surface plasmons
  • Purcell effect
  • coupled metal nanoparticles
  • plasmon lasing
  • stimulated emission

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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  • Cite this

    Suh, J. Y., Kim, C. H., Zhou, W., Huntington, M. D., Co, D. T., Wasielewski, M. R., & Odom, T. W. (2012). Plasmonic bowtie nanolaser arrays. Nano letters, 12(11), 5769-5774. https://doi.org/10.1021/nl303086r