Surface plasmon effects on the far-field signals of AgOx-type super resolution near-field structure

Wei-Chih Liu, Ming Yaw Ng, Din Ping Tsai

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

A super-resolution near-field structure (Super-RENS) of AgOx type could perform the task of high-density near-field optical recording in a more feasible way. To further explore the optical resolution and controllability of super-RENS disks, the near-field and far-field optical properties of the AgOx-type super-RENS embedded with random silver nanoparticles and nano cavities of different densities were studied using finite-difference time-domain simulations. The random nanostructures yielded super-resolution capability, but the surface plasmon effects generated by the random metallic nanoparticles significantly enhanced the far-field signals. A simplified Fourier optical theory was proposed to understand the relationship between the enhanced near field of random nanostructures and the super-resolution capability in the far field.

Original languageEnglish
Pages (from-to)4713-4717
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume43
Issue number7 B
DOIs
Publication statusPublished - 2004 Jul 1

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Keywords

  • Finite-difference time-domain method
  • Localized surface plasmon
  • Metallic nanoparticles
  • Super-resolution near-field structure

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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