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Optics Express
Volume 15, Issue 18, 11313-11320 (September 2007).

Hyperspectral imaging of plasmonic nanostructures with nanoscale resolution

M. V. Bashevoy,1 F. Jonsson,1 K. F. MacDonald,1 Y. Chen,2 and N. I. Zheludev1

1EPSRC Nanophotonics Portfolio Centre, School of Physics and Astronomy, University of Southampton, SO17 1BJ, United Kingdom.
2Rutherford Appleton Laboratory Didcot, Oxon, OX11 0QX, United Kingdom

Abstract

We report on the first realization of a hyperspectral imaging technique for surface plasmon polaritons on metallic nanostructures. The technique uses a scanning electron beam and allows for simple visualization of light emission from decoupled plasmons, providing information on decay lengths and feature sizes with nanometer resolution.

Full text: PDF [775 kB] | DOI: 10.1364/oe.15.011313

URL: http://www.opticsexpress.org/abstract.cfm?id=140985

Additional material

Movie 1: QuickTime Movie [3.06 MB]
Movie accompanying Figure 3: Hyperspectral imaging of the 400 nm gold grating sample with the wide-angle parabolic light-collection mirror. The movie shows spatial plasmonic emission intensity distributions obtained by slicing the hyperspectral data cube in the x-y plane (averaged over 7 nm wavelength intervals); showing weak resonance and poor plasmon decoupling efficiency of the grating at 517-524 nm; strong resonance and efficient plasmon decoupling of the grating at 617-625 nm; negligible plasmonic emission at 1030-1037 nm.
URL: http://www.opticsexpress.org/viewmedia.cfm?URI=oe-15-18-11313-1

Movie 2: QuickTime Movie [3.48 MB]
Movie accompanying Figure 4: Hyperspectral imaging of the 450 nm gold grating sample with the narrow-angle parabolic light-collection mirror. The movie shows spatial plasmonic emission intensity distributions obtained by slicing the hyperspectral data cube in the x-y plane (averaged over 7 nm wavelength intervals); showing the grating inhibiting background emission at angles within the mirror's acceptance window at 730-737 nm; strong resonance and efficient plasmon decoupling of the grating at 835-842 nm; negligible plasmonic emission at 1030-1037 nm.
URL: http://www.opticsexpress.org/viewmedia.cfm?URI=oe-15-18-11313-2

Optics Infobase: http://www.opticsinfobase.org/abstract.cfm?URI=oe-15-18-11313

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