Blazing evanescent grating orders

a spectral approach to beating the Rayleigh limit

C. J. Handmer, C. De Martijn Sterke, R. C. McPhedran, L. C. Borten, M. J. Steel, A. Rahmani

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We develop a way to enhance the amplitudes of the nonpropagating evanescent orders of resonant dielectric gratings. We use this blazing to design gratings with spectra tailored to generate steerable sub-Rayleigh field concentrations on a surface. We investigate the enhancement and customization of evanescent fields necessary to create a virtual and passive scanning probe with no moving parts. Spot size can be decreased 1 order of magnitude below the free-space Rayleigh limit.

Original languageEnglish
Pages (from-to)2846-2848
Number of pages3
JournalOptics Letters
Volume35
Issue number17
DOIs
Publication statusPublished - 1 Sep 2010

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