|
|||||
|
|
Direct observation of optical excitation transfer based on resonant optical near-field interaction |
|
| Authors: | W. Nomura T. Yatsui T. Kawazoe M. Naruse E. Runge C. Lienau M. Ohtsu |
| Affiliation: | 1. School of Engineering, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8656, Japan 2. The Nanophotonics Research Center, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8656, Japan 3. National Institute of Information and Communications Technology, 4-2-1 Nukui-kita, Koganei, Tokyo, 184-8795, Japan 4. Institut f??r Physik, Technische Universit?t Ilmenau, 98693, Ilmenau, Germany 5. Institut f??r Physik, Carl von Ossietzky Universit?t, 26111, Oldenburg, Germany |
| Abstract: | This article reports the direct observation of long-distance 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?Cshell QDs and succeeded for the first time in obtaining output signals resulting from a unidirectional optical excitation transfer length of 2.4???m. Furthermore, we demonstrate that the optical excitation transfer occurs via the resonant excited levels of the QDs with a comparative experiment using non-resonant QDs. This excitation-transfer mechanism allows for intersecting, non-interacting nano-optical wires. |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |