Nanophotonic switch using ZnO nanorod double-quantum-well structures

The authors report on time-resolved near-field spectroscopy of Zn O ∕ Zn Mg O nanorod double-quantum-well structures (DQWs) for a nanometer-scale photonic device. They observed nutation of the population between the resonantly coupled exciton states of DQWs. Furthermore, they demonstrated switching...

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Bibliographic Details
Published in:Applied physics letters 2007-05, Vol.90 (22), p.223110-223110-3
Main Authors: Yatsui, Takashi, Sangu, Suguru, Kawazoe, Tadashi, Ohtsu, Motoichi, An, Sung Jin, Yoo, Jinkyoung, Yi, Gyu-Chul
Format: Article
Language:English
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Summary:The authors report on time-resolved near-field spectroscopy of Zn O ∕ Zn Mg O nanorod double-quantum-well structures (DQWs) for a nanometer-scale photonic device. They observed nutation of the population between the resonantly coupled exciton states of DQWs. Furthermore, they demonstrated switching dynamics by controlling the exciton excitation in the dipole-inactive state via an optical near field. The results of time-resolved near-field spectroscopy of isolated DQWs described here are a promising step toward designing a nanometer-scale photonic switch and related devices.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2743949