Plasmonic crystal defect nanolaser

Amit M. Lakhani, Myung Ki Kim, Erwin K. Lau, Ming C. Wu

Research output: Contribution to journalArticlepeer-review

94 Citations (Scopus)


Surface plasmons are widely interesting due to their ability to probe nanoscale dimensions. To create coherent plasmons, we demonstrate a nanolaser based on a plasmonic bandgap defect state inside a surface plasmonic crystal. A one-dimensional semiconductor-based plasmonic crystal is engineered to have stopbands in which surface plasmons are prohibited from travelling in the crystalline structure. We then confine surface plasmons using a three-hole defect in the periodic structure. Using conventional III-V semiconductors, we achieve lasing in mode volumes as small as Veff = 0.3(λ0/n)3 at λ0 = 1342 nm, which is 10 times smaller than similar modes in photonic crystals of the same size. This demonstration should pave the way for achieving engineered nanolasers with deep-subwavelength mode volumes and attractive nanophotonics integration capabilities while enabling the use of plasmonic crystals as an attractive platform for designing plasmons.

Original languageEnglish
Pages (from-to)18237-18245
Number of pages9
JournalOptics Express
Issue number19
Publication statusPublished - 2011 Sept 12
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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