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Optics Letters

Optics Letters


  • Vol. 30, Iss. 1 — Jan. 1, 2005
  • pp: 93–95

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

Arup Neogi, Hadis Morkoç, Takamasa Kuroda, and Atsushi Tackeuchi  »View Author Affiliations

Optics Letters, Vol. 30, Issue 1, pp. 93-95 (2005)

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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.

© 2005 Optical Society of America

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(250.5230) Optoelectronics : Photoluminescence

Arup Neogi, Hadis Morkoç, Takamasa Kuroda, and Atsushi Tackeuchi, "Coupling of spontaneous emission from GaN-AlN quantum dots into silver surface plasmons," Opt. Lett. 30, 93-95 (2005)

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