Authors

G. Webb-Wood; A. Ghoshal;P. G. Kik

Comments

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"This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in the linked citation and may be found originally at Applied Physics Letters."

Abbreviated Journal Title

Appl. Phys. Lett.

Keywords

PERFECT-LENS; OPTICS; Physics, Applied

Abstract

Frequency dependent near-field scanning optical microscopy (NSOM) measurements of plasmon-mediated near-field focusing using a 50 nm thick Au film are presented. In these studies the tip aperture of a NSOM probe acts as a localized light source, while the near-field image formed by the metal lens is detected in situ using nanoscale scatterers placed in the image plane. By scanning the relative position of object and probe, the near-field image generated by the lens is resolved. NSOM scans performed at different illumination frequencies reveal an optimum near-field image quality at frequencies close to the surface plasmon resonance frequency.

Journal Title

Applied Physics Letters

Volume

89

Issue/Number

19

Publication Date

1-1-2006

Document Type

Article

Language

English

First Page

3

WOS Identifier

WOS:000241960400081

ISSN

0003-6951

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