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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 1 — Jan. 4, 2010
  • pp: 165–172

Direct near-field optical imaging of plasmonic resonances in metal nanoparticle pairs

Hsing-Ying Lin, Chen-Han Huang, Chih-Han Chang, Yun-Chiang Lan, and Hsiang-Chen Chui  »View Author Affiliations


Optics Express, Vol. 18, Issue 1, pp. 165-172 (2010)
http://dx.doi.org/10.1364/OE.18.000165


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Abstract

In this paper we investigate the near-field optical behavior of plasmon coupling in gold nanoparticle pairs. In particular, by performing series measurements through a fiber-collection mode near-field scanning optical microscope (NSOM), we directly observed the localized electromagnetic (EM) field distribution between two nanospheres is sensitively depended on the incident polarization and interparticle distance. The qualitative near-field observation and quantitative analysis facilitate more understanding of localized hot spots in surface-enhanced Raman scattering (SERS), and nano-applications in selectively controlling the spatial distribution of localized surface plasmon (SP) modes on a fabricated nanostructure by adjusting the polarization direction.

© 2009 OSA

OCIS Codes
(240.5420) Optics at surfaces : Polaritons
(240.6680) Optics at surfaces : Surface plasmons
(180.4243) Microscopy : Near-field microscopy
(310.6628) Thin films : Subwavelength structures, nanostructures
(240.6695) Optics at surfaces : Surface-enhanced Raman scattering

ToC Category:
Optics at Surfaces

History
Original Manuscript: October 21, 2009
Revised Manuscript: December 2, 2009
Manuscript Accepted: December 2, 2009
Published: December 22, 2009

Virtual Issues
Vol. 5, Iss. 2 Virtual Journal for Biomedical Optics

Citation
Hsing-Ying Lin, Chen-Han Huang, Chih-Han Chang, Yun-Chiang Lan, and Hsiang-Chen Chui, "Direct near-field optical imaging of plasmonic resonances in metal nanoparticle pairs," Opt. Express 18, 165-172 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-1-165


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