Far-field optical response of localized near-field enhancements induced by nano scatters in AgOx super-resolution near-field structure

Tai Chi Chu; Wei Chih Liu; Din Ping Tsai

doi:10.1117/12.580165

Far-field optical response of localized near-field enhancements induced by nano scatters in AgO_x super-resolution near-field structure

Tai Chi Chu^*, Wei Chih Liu, Din Ping Tsai

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Conference article › peer-review

3 Citations (Scopus)

Abstract

The super-resolution near-field structure (super-RENS) is an ultrahigh-density near-field optical disk data storage medium which can achieve superior spatial resolution. Our previous studies found that enhanced local optical intensity occurred at the near field of the super-RENS disk, and the nonlinear near-field optical enhancement is related to the localized surface plasmons of silver clusters dissociated from the AgO_x layer of the super-RENS disk. In this paper, we report the near-field and far-field properties of AgO_x-type super-RENS with different embedded silver nanoparticles using two-dimensional finite-difference time-domain (FDTD) calculations. Highly localized enhancements are found between adjacent silver nanoparticles in the near fields. The far-field signals of different types silver nano scatters confirm the super-resolution capability of AgO _x-type Super-RENS disks. The behaviors of far-field signals indicate the correlation between the enhanced localized surface plasmons and the super-resolution capabilities of AgO_x-type super-RENS.

Original language	English
Article number	12
Pages (from-to)	48-55
Number of pages	8
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5643
DOIs	https://doi.org/10.1117/12.580165
Publication status	Published - 2005
Event	Advances in Optical Data Storage Technology - Beijing, China Duration: 2004 Nov 8 → 2004 Nov 10

Keywords

Finite-difference time-domain method
Localized surface plasmon
Metallic nanoparticles
Near-field optical storage
Optical disks
Super-resolution near-field structure

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.580165

Cite this

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title = "Far-field optical response of localized near-field enhancements induced by nano scatters in AgOx super-resolution near-field structure",

abstract = "The super-resolution near-field structure (super-RENS) is an ultrahigh-density near-field optical disk data storage medium which can achieve superior spatial resolution. Our previous studies found that enhanced local optical intensity occurred at the near field of the super-RENS disk, and the nonlinear near-field optical enhancement is related to the localized surface plasmons of silver clusters dissociated from the AgOx layer of the super-RENS disk. In this paper, we report the near-field and far-field properties of AgOx-type super-RENS with different embedded silver nanoparticles using two-dimensional finite-difference time-domain (FDTD) calculations. Highly localized enhancements are found between adjacent silver nanoparticles in the near fields. The far-field signals of different types silver nano scatters confirm the super-resolution capability of AgO x-type Super-RENS disks. The behaviors of far-field signals indicate the correlation between the enhanced localized surface plasmons and the super-resolution capabilities of AgOx-type super-RENS.",

keywords = "Finite-difference time-domain method, Localized surface plasmon, Metallic nanoparticles, Near-field optical storage, Optical disks, Super-resolution near-field structure",

author = "Chu, {Tai Chi} and Liu, {Wei Chih} and Tsai, {Din Ping}",

year = "2005",

doi = "10.1117/12.580165",

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volume = "5643",

pages = "48--55",

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AU - Chu, Tai Chi

AU - Liu, Wei Chih

AU - Tsai, Din Ping

PY - 2005

Y1 - 2005

N2 - The super-resolution near-field structure (super-RENS) is an ultrahigh-density near-field optical disk data storage medium which can achieve superior spatial resolution. Our previous studies found that enhanced local optical intensity occurred at the near field of the super-RENS disk, and the nonlinear near-field optical enhancement is related to the localized surface plasmons of silver clusters dissociated from the AgOx layer of the super-RENS disk. In this paper, we report the near-field and far-field properties of AgOx-type super-RENS with different embedded silver nanoparticles using two-dimensional finite-difference time-domain (FDTD) calculations. Highly localized enhancements are found between adjacent silver nanoparticles in the near fields. The far-field signals of different types silver nano scatters confirm the super-resolution capability of AgO x-type Super-RENS disks. The behaviors of far-field signals indicate the correlation between the enhanced localized surface plasmons and the super-resolution capabilities of AgOx-type super-RENS.

AB - The super-resolution near-field structure (super-RENS) is an ultrahigh-density near-field optical disk data storage medium which can achieve superior spatial resolution. Our previous studies found that enhanced local optical intensity occurred at the near field of the super-RENS disk, and the nonlinear near-field optical enhancement is related to the localized surface plasmons of silver clusters dissociated from the AgOx layer of the super-RENS disk. In this paper, we report the near-field and far-field properties of AgOx-type super-RENS with different embedded silver nanoparticles using two-dimensional finite-difference time-domain (FDTD) calculations. Highly localized enhancements are found between adjacent silver nanoparticles in the near fields. The far-field signals of different types silver nano scatters confirm the super-resolution capability of AgO x-type Super-RENS disks. The behaviors of far-field signals indicate the correlation between the enhanced localized surface plasmons and the super-resolution capabilities of AgOx-type super-RENS.

KW - Finite-difference time-domain method

KW - Localized surface plasmon

KW - Metallic nanoparticles

KW - Near-field optical storage

KW - Optical disks

KW - Super-resolution near-field structure

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