| Citation: |
Yang Qing, Lou Jingyi, Yang Deren, Tong Limin. An Evanescent Coupling Approach for Optical Characterization of ZnO Nanowires[J]. Journal of Semiconductors, 2006, In Press.
Yang Q, Lou J Y, Yang D R, Tong L M. An Evanescent Coupling Approach for Optical Characterization of ZnO Nanowires[J]. Chin. J. Semicond., 2006, 27(3): 425.
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An Evanescent Coupling Approach for Optical Characterization of ZnO Nanowires
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Abstract
Using a nanoscale silica fiber taper,light can be efficiently coupled into a single ZnO nanowire by means of evanescent coupling.The method is valid for launching light into a single nanowire in the ultraviolet to infrared range with a coupling efficiency of 25%.Low-loss optical guiding of ZnO nanowires is demonstrated,and the photoluminescence of a single ZnO nanowire is also observed.Compared to conventional approaches in which a lens-focused laser beam is used to excite nanowires at specific wavelengths,this evanescent coupling approach has advantages such as high coupling efficiency and broad-band validity,and it is promising for the optical characterization of semiconductor nanowires or nanoribbons.-
Keywords:
- ZnO nanowire,
- evanescent coupling,
- optical characterization
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