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

Tai Chi Chu; Wei-Chih Liu; Din Ping Tsai

doi:10.1117/12.580165

3 January 2005 Far-field optical response of localized near-field enhancements induced by nanoscatters in AgO_x super-resolution near-field structure

Tai Chi Chu, Wei-Chih Liu, Din Ping Tsai

Author Affiliations +

Proceedings Volume 5643, Advances in Optical Data Storage Technology; (2005) https://doi.org/10.1117/12.580165
Event: Photonics Asia, 2004, Beijing, China

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.

Citation Download Citation

Tai Chi Chu, Wei-Chih Liu, and Din Ping Tsai "Far-field optical response of localized near-field enhancements induced by nanoscatters in AgO_x super-resolution near-field structure", Proc. SPIE 5643, Advances in Optical Data Storage Technology, (3 January 2005); https://doi.org/10.1117/12.580165

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