Super-resolution and frequency-dependent efficiency of near-field optical disks with silver nanoparticles

Ming Yaw Ng, Wei Chih Liu

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

The super-resolution capability of the AgOx-type super-resolution near-field structure disk with silver nanoparticles was studied using finite-difference time-domain method at different incident light frequencies. The near fields exhibited strongly local field enhancement around silver nanoparticles in the AgOx layer due to localized surface plasmon. The subwavelength recording marks smaller than λ/10 were distinguishable since the metallic nanoparticles with high localized fields transferred evanescent waves to detectable signals in the far field. The far-field signals from random silver nanoparticles displayed similar behaviors as those from single nanoparticle and red-shifts of peak frequencies from particle-particle interaction.

Original languageEnglish
Pages (from-to)9422-9430
Number of pages9
JournalOptics Express
Volume13
Issue number23
DOIs
Publication statusPublished - 2005 Nov 14

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optical disks
near fields
silver
nanoparticles
far fields
evanescent waves
particle interactions
finite difference time domain method
red shift
recording
augmentation

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Super-resolution and frequency-dependent efficiency of near-field optical disks with silver nanoparticles. / Ng, Ming Yaw; Liu, Wei Chih.

In: Optics Express, Vol. 13, No. 23, 14.11.2005, p. 9422-9430.

Research output: Contribution to journalArticle

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