Coupling of spontaneous emission from GaN-AlN quantum dots into silver surface plasmons

Arup Neogi, Hadis Morkoç, Takamasa Kuroda, Atsushi Tackeuchi

    Research output: Contribution to journalArticle

    20 Citations (Scopus)

    Abstract

    We have demonstrated the decay of spontaneous emission (SE) from AlN-GaN quantum dots (QDs) into silver surface plasmon (SP) modes in the ultraviolet at approximately 375-380 nm. Using time-resolved photoluminescence (PL), we show that the electron-hole recombination rate in AlN-GaN QDs is enhanced when SE is resonantly coupled to a metal SP mode, corresponding to the dip in the continuous-wave PL spectrum. Exciton recombination by means of silver SP modes is as much as 3-7 times faster than in normal QD SE and depends strongly on emission wavelength and thickness of the silver.

    Original languageEnglish
    Pages (from-to)93-95
    Number of pages3
    JournalOptics Letters
    Volume30
    Issue number1
    DOIs
    Publication statusPublished - 2005 Jan 1

    Fingerprint

    plasmons
    spontaneous emission
    silver
    quantum dots
    photoluminescence
    metal surfaces
    continuous radiation
    excitons
    decay
    wavelengths

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics

    Cite this

    Coupling of spontaneous emission from GaN-AlN quantum dots into silver surface plasmons. / Neogi, Arup; Morkoç, Hadis; Kuroda, Takamasa; Tackeuchi, Atsushi.

    In: Optics Letters, Vol. 30, No. 1, 01.01.2005, p. 93-95.

    Research output: Contribution to journalArticle

    Neogi, Arup ; Morkoç, Hadis ; Kuroda, Takamasa ; Tackeuchi, Atsushi. / Coupling of spontaneous emission from GaN-AlN quantum dots into silver surface plasmons. In: Optics Letters. 2005 ; Vol. 30, No. 1. pp. 93-95.
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