Journal
APPLIED PHYSICS LETTERS
Volume 99, Issue 1, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3608313
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- Grants-in-Aid for Scientific Research [23656209, 21246050, 23760277] Funding Source: KAKEN
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We report two types of surface plasmon (SP) modes guided by a Ga-doped ZnO (ZnO:Ga) layer bounded between air and glass. A symmetric SP (s-) mode having leaky waves was found at an air-ZnO interface by attenuated total reflection measurements and showed a cutoff thickness region from 141 to 107 nm. Consequently, only an asymmetric SP (a-) mode bound at a ZnO-glass interface remained, as confirmed by numerical analyses and finite-difference time-domain simulations. s- and a-modes of the ZnO: Ga layer exhibited a high cutoff thickness and a strongly confined SP field at air-ZnO and ZnO-glass interfaces, respectively. (C) 2011 American Institute of Physics. [doi:10.1063/1.3608313]
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