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

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

2004-09-03

arxiv.org/abs/cond-mat/0409089v1

Physics

Condensed Matter

Materials Science

11 pages, 4 figures

Scientific paper

10.1364/OL.30.000093

We have demonstrated surface-plasmon induced change in spontaneous emission rate in the ultraviolet regime at ~ 375-380 nm, using AlN/GaN quantum dots (QD). Using time-resolved and continuous-wave photoluminescence measurements, the recombination rate in AlN/GaN QD is shown to be enhanced when spontaneous emission is resonantly coupled to a metal-surface plasmon mode. The exciton recombination process via Ag-surface plasmon modes is observed to be as much as 3-7 times faster than in normal QD spontaneous emission and depends strongly on the emission wavelength and silver thickness.

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