Real-time tunable lasing from plasmonic nanocavity arrays

Ankun Yang, Thang B. Hoang, Montacer Dridi, Claire Deeb, Maiken H. Mikkelsen, George C Schatz, Teri W Odom

Research output: Contribution to journalArticle

137 Citations (Scopus)

Abstract

Plasmon lasers can support ultrasmall mode confinement and ultrafast dynamics with device feature sizes below the diffraction limit. However, most plasmon-based nanolasers rely on solid gain materials (inorganic semiconducting nanowire or organic dye in a solid matrix) that preclude the possibility of dynamic tuning. Here we report an approach to achieve real-time, tunable lattice plasmon lasing based on arrays of gold nanoparticles and liquid gain materials. Optically pumped arrays of gold nanoparticles surrounded by liquid dye molecules exhibit lasing emission that can be tuned as a function of the dielectric environment. Wavelength-dependent time-resolved experiments show distinct lifetime characteristics below and above the lasing threshold. By integrating gold nanoparticle arrays within microfluidic channels and flowing in liquid gain materials with different refractive indices, we achieve dynamic tuning of the plasmon lasing wavelength. Tunable lattice plasmon lasers offer prospects to enhance and detect weak physical and chemical processes on the nanoscale in real time.

Original languageEnglish
Article number6939
JournalNature Communications
Volume6
DOIs
Publication statusPublished - Apr 20 2015

Fingerprint

Gold
Nanoparticles
lasing
Liquids
Lasers
Coloring Agents
gold
Chemical Phenomena
Tuning
Nanowires
nanoparticles
Physical Phenomena
Wavelength
Refractometry
Microfluidics
liquids
dyes
tuning
Laser modes
inorganic materials

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Chemistry(all)
  • Physics and Astronomy(all)

Cite this

Real-time tunable lasing from plasmonic nanocavity arrays. / Yang, Ankun; Hoang, Thang B.; Dridi, Montacer; Deeb, Claire; Mikkelsen, Maiken H.; Schatz, George C; Odom, Teri W.

In: Nature Communications, Vol. 6, 6939, 20.04.2015.

Research output: Contribution to journalArticle

Yang, Ankun ; Hoang, Thang B. ; Dridi, Montacer ; Deeb, Claire ; Mikkelsen, Maiken H. ; Schatz, George C ; Odom, Teri W. / Real-time tunable lasing from plasmonic nanocavity arrays. In: Nature Communications. 2015 ; Vol. 6.
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