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Proceedings Paper

Subwavelength focusing using radiationless inteference at optical wavelengths
Author(s): R. Gordon
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Paper Abstract

In this work, I propose two methods for extending radiationless intereference to achieve an extreme subwavelength focus in the visible part of the optical spectrum. These methods are based on metal-insulator-metal (MIM) waveguide structures. The first uses the transverse evanescent field from a slit-coupled MIM waveguide. The second uses the highest order mode of a MIM waveguide array. Subwavelength focusing to a tenth of the optical wavelength is demonstrated numerically. Considering recent experiments, the proposed structures are practically viable. Methods to overcome other technical issues associated with this proposal are discussed.

Paper Details

Date Published: 12 May 2009
PDF: 9 pages
Proc. SPIE 7353, Metamaterials IV, 73530Y (12 May 2009); doi: 10.1117/12.820535
Show Author Affiliations
R. Gordon, Univ. of Victoria (Canada)


Published in SPIE Proceedings Vol. 7353:
Metamaterials IV
Vladimir Kuzmiak; Peter Markos; Tomasz Szoplik, Editor(s)

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