Plasmonic crystal defect nanolaser

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 h...

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Veröffentlicht in:Optics express 2011-09, Vol.19 (19), p.18237-18245
Hauptverfasser: Lakhani, Amit M, Kim, Myung-ki, Lau, Erwin K, Wu, Ming C
Format: Artikel
Sprache:eng
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Zusammenfassung: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 V(eff) = 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.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.19.018237