Fast and bright spontaneous emission of Er3+ ions in metallic nanocavity

Cited 14 time in webofscience Cited 0 time in scopus
  • Hit : 349
  • Download : 494
By confining light in a small cavity, the spontaneous emission rate of an emitter can be controlled via the Purcell effect. However, while Purcell factors as large as similar to 10,000 have been predicted, actual reported values were in the range of about 10-30 only, leaving a huge gap between theory and experiment. Here we report on enhanced 1.54-mu m emission from Er3+ ions placed in a very small metallic cavity. Using a cavity designed to enhance the overall Purcell effect instead of a particular component, and by systematically investigating its photonic properties, we demonstrate an unambiguous Purcell factor that is as high as 170 at room temperature. We also observe >90 times increase in the far-field radiant flux, indicating that as much as 55% of electromagnetic energy that was initially supplied to Er3+ ions in the cavity escape safely into the free space in just one to two optical cycles.
Publisher
NATURE PUBLISHING GROUP
Issue Date
2015-05
Language
English
Article Type
Article
Citation

NATURE COMMUNICATIONS, v.6

ISSN
2041-1723
DOI
10.1038/ncomms8080
URI
http://hdl.handle.net/10203/199784
Appears in Collection
MS-Journal Papers(저널논문)NT-Journal Papers(저널논문)PH-Journal Papers(저널논문)
Files in This Item
ncomms8080.pdf(663.51 kB)Download
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 14 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0