Control of surface plasmon generation efficiency by slit-width tuning

H. W. Kihm, K. G. Lee, D. S. Kim, J. H. Kang, Q Han Park

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Abstract

We demonstrate control of surface plasmon polariton (SPP) generation efficiency via varying the width of a single slit that acts as a SPP launcher. Generated SPP intensities are directly measured through a near-field scanning microscope measuring both the transmitted and the scattered light. These results demonstrate enhancement as well as suppression of surface plasmon generation efficiency at specific slit widths. The experimentally observed sinusoidal width dependence can be explained by diffraction theory.

Original languageEnglish
Article number051115
JournalApplied Physics Letters
Volume92
Issue number5
DOIs
Publication statusPublished - 2008 Feb 15

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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