Journal
OPTICAL MATERIALS
Volume 64, Issue -, Pages 257-261Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optmat.2016.11.034
Keywords
Surface plasmon resonance; Hybrid nanowires; Gold nanoparticles; Second-harmonic generation
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Funding
- 973 Programs [2014CB921301]
- National Natural Science Foundation of China [11204097]
- Doctoral fund of Ministry of Education of China [20130142110078]
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We demonstrate the enhanced second-harmonic generation (SHG) in single ZnS nanowires (NWs) attached with gold nanoparticles (Au NPs). The hybrid Au/ZnS NWs with different densities of the attached Au NPs were prepared by a simple solution impregnation method. By comparing with bare ZnS NWs, similar to 1.3, similar to 6.6, similar to 7 and similar to 2 times enhancement of SH intensity was achieved in the hybrid Au/ZnS NWs with low, moderate, high and ultrahigh densities of the attached Au NPs, respectively. The enhanced SHG in the hybrid Au/ZnS NWs is attributed to the strong local-fields from the Au cluster under the near resonant condition, which is supported by the related dark-field scattering spectra. This hybrid Au/ZnS NWs provide a simple platform for enhancing nonlinear optical responses, which have potential applications in nano-probing and nano-sensing. (C) 2016 Elsevier B.V. All rights reserved.
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