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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 3 — Jan. 31, 2011
  • pp: 2502–2518

Hyper-spectral confocal nano-imaging with a 2D super-lens

Kiang Wei Kho, Shen ZeXiang, and Olivo Malini  »View Author Affiliations

Optics Express, Vol. 19, Issue 3, pp. 2502-2518 (2011)

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Achieving sub-100 nm resolution over a broad visible bandwidth has long been an elusive goal in the nano-imaging of cell-surface interfaces. While metamaterial super-lenses and near-field optics have been previously demonstrated, these techniques can operate only at one wavelength, and do not provide accesses to the cell-surface interfaces. Here, we investigate a broadband 2D lens comprised of an oblate spheroidal dielectric cavity embedded just beneath a planar metal surface. The lens operates by adiabatically focusing asymmetric plasmon energies at sub-100 nm scale on the low-index side of the thin metal film formed between the cavity top and the planar metal surface. We then proposed the use of our lens in a high-resolution far-field confocal microscopy setup. Due to the surface-field nature of our lens, the presented system holds potential as an indispensable tool for cell-surface interfacial studies that require sub-100 nm hyper-spectral imaging analysis.

© 2011 OSA

OCIS Codes
(110.0110) Imaging systems : Imaging systems
(240.0240) Optics at surfaces : Optics at surfaces
(350.0350) Other areas of optics : Other areas of optics

ToC Category:
Optics at Surfaces

Original Manuscript: September 21, 2010
Revised Manuscript: October 17, 2010
Manuscript Accepted: October 18, 2010
Published: January 26, 2011

Virtual Issues
Vol. 6, Iss. 2 Virtual Journal for Biomedical Optics

Kiang Wei Kho, Shen ZeXiang, and Olivo Malini, "Hyper-spectral confocal nano-imaging with a 2D super-lens," Opt. Express 19, 2502-2518 (2011)

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