Direct observation of optical excitation transfer based on resonant optical near-field interaction

W. Nomura, T. Yatsui, T. Kawazoe, M. Naruse, E. Runge, C. Lienau, M. Ohtsu

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

This article reports the direct observation of longdistance optical excitation transfer based on resonant optical near-field interactions in randomly distributed quantum dots (QDs). We fabricated optical excitation transfer paths based on randomly distributed QDs by using CdSe/ZnS core-shell QDs and succeeded for the first time in obtaining output signals resulting from a unidirectional optical excitation transfer length of 2.4 μm. Furthermore, we demonstrate that the optical excitation transfer occurs via the resonant excited levels of the QDs with a comparative experiment using nonresonant QDs. This excitation-transfer mechanism allows for intersecting, non-interacting nano-optical wires.

Original languageEnglish
Pages (from-to)257-262
Number of pages6
JournalApplied Physics B: Lasers and Optics
Volume107
Issue number2
DOIs
Publication statusPublished - May 2012
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)
  • General Physics and Astronomy

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