Progress of super-resolution near-field structure and its application in optical data storage

doi:10.1007/s12200-014-0418-2

Front. Optoelectron.

2014, Vol. 7

Issue (4) : 475-485 https://doi.org/10.1007/s12200-014-0418-2

REVIEW ARTICLE

Progress of super-resolution near-field structure and its application in optical data storage

Kui ZHANG¹,Yongyou GENG¹,Yang WANG¹,Yiqun WU^1,^2,^*(

)

1. Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
2. Key Laboratory of Functional Inorganic Material Chemistry (Heilongjiang University), Ministry of Education, Harbin 150080, China

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Abstract

The era of big data has necessitated the use of ultra-high density optical storage devices. Super-resolution near-field structure (super-RENS), which has successfully surpassed the fundamental optical diffraction limit, is one of the promising next generation high-density optical storage technologies. This technology combines the traditional super-resolution optical disk with a near-field structure, and has the advantages of structural simplicity, strong practicability, and, more importantly, compatibility with the current optical storage pickup. The mask layer in super-RENS functions as the key to realizing super-resolution. Development of suitable materials and stack designs has greatly been improved in the last decade. This paper described several types of super-RENS, such as aperture-type, light scattering center-type, bubble-type, and other types (e.g., WO_xand ZnO), particularly the newly proposed super-RENS technology and research achievements. The paper also reviews the applications of super-RENS in high-density optical data storage in recent years. After analyzing and comparing various types of super-RENS technology, the paper proposes the aperture-type based on the mechanism of nonlinear optics as the most suitable candidate for practical applications in the near future.

Keywords super-resolution near-field mask layer optical nonlinear localized surface plasmas

Corresponding Author(s): Yiqun WU

Online First Date: 13 August 2014 Issue Date: 12 December 2014

Cite this article:

Kui ZHANG,Yongyou GENG,Yang WANG, et al. Progress of super-resolution near-field structure and its application in optical data storage[J]. Front. Optoelectron., 2014, 7(4): 475-485.

URL:

https://academic.hep.com.cn/foe/EN/10.1007/s12200-014-0418-2
https://academic.hep.com.cn/foe/EN/Y2014/V7/I4/475

Fig.1 Schematic of the super-RENS disk structure and near-field recording [4]

Fig.2 Power-time-transmission plot of crystalline Sb-Te samples [17]. (a) Sb; (b) SbTe; (c) Sb₂Te₃; (d) Sb₂Te

Fig.3 (a) Structure of In-Sb super-RENS ROM disk [19]; (b) snapshot of playback demonstration of HD video content from In-Sb super-RENS disk [20]

Fig.4 Z-scan measurement results for Sb₂Te₃ thin films [28]

Fig.5 Schematic and principle of nano-optical information storage: (a) sample structure; (b) optical spot intensity profile [28]

Fig.6 Cross section of an AgO_x super-RENS disk [10]

Fig.7 TEM images of ZnS-SiO₂/AgO_x/ZnS-SiO₂ films after being irradiated by a blue laser pulse with a power of 7 mW at a duration of 1 μs [29]: (a) 0.2; (b) 0.5; (c) 0.7

Fig.8 Bright-field TEM images of the silver-nanoparticle-embedded phase change recording pits with different laser power and pulse width [32]: (a) random Ag nanoparticles distribution; (b) ring Ag nanoparticles distribution

Fig.9 (a) TEM bright-field images recorded at 10 mW and subsequently readout by 4 mW sample and (b) magnified bubble pit [34]. The inserted image in (b) is the selected area of the electron diffraction patterns around the recorded pits

Fig.10 (a) Semicircular bubble-type super-RENS disk [36]; (b) elliptical bubble-type super-RENS disk [37]

Fig.11 Schematic of the super-RENS [41]: (a) recorded super-RENS disk; (b) simplified super-RENS

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