Numerical study of a high-resolution far-field scanning optical microscope via a surface plasmon-modulated light source

Baoshan Guo, Qiaoqiang Gan, Guofeng Song, Jianxia Gao, Lianghui Chen

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14 Scopus citations

Abstract

In this paper, we analyze light transmission through a single subwavelength slit surrounded by periodic grooves in layered films consisting of Au and dielectric material. A subwavelength grating is scanned numerically by the finite difference time domain method in two dimensions. The results show that the transmission field can be confined to a spot with subwavelength width in the far field and can be useful in the application of a high-resolution far-field scanning optical microscope. © 2007 IEEE.
Original languageEnglish (US)
Pages (from-to)830-833
Number of pages4
JournalJournal of Lightwave Technology
Volume25
Issue number3
DOIs
StatePublished - Mar 1 2007
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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