Abstract | ||
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We observed the optically forbidden energy transfer between cubic CuCl quantum dots coupled via an optical near-field interaction using time-resolved near-field photoluminescence (PL) spectroscopy. The energy transfer time and exciton lifetime were estimated from the rise and decay times of the PL pump-probe signal, respectively. We found that the exciton lifetime increased as the energy transfer time fell. This result strongly supports the notion that near-field interaction between QD makes the anti-parallel dipole coupling. Namely, a quantum-dots pair coupled by an optical near field has a long exciton lifetime which indicates the antiparallel coupling of QDs forming a weakly radiative quadrupole state. |
Year | DOI | Venue |
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2005 | 10.1093/ietele/e88-c.9.1845 | IEICE TRANSACTIONS ON ELECTRONICS |
Keywords | Field | DocType |
optical near-field interaction, anti-parallel electric dipole pair, near-field spectroscopy, coupled quantum dots | Biexciton,Exciton,Quadrupole,Optics,Radiative transfer,Electric dipole moment,Dipole,Quantum dot,Photoluminescence,Physics | Journal |
Volume | Issue | ISSN |
E88C | 9 | 1745-1353 |
Citations | PageRank | References |
0 | 0.34 | 0 |
Authors | ||
3 |
Name | Order | Citations | PageRank |
---|---|---|---|
Tadashi Kawazoe | 1 | 3 | 3.36 |
Kiyoshi Kobayashi | 2 | 6 | 2.72 |
ohtsu | 3 | 8 | 6.37 |