臺灣博碩士論文加值系統

在本篇論文中，我們針對以氧化銀為遮罩層的超解析近場結構光碟（Super resolution near-field structure, Super-RENS）進行分析。氧化銀在經雷射光照射後，會在雷射光點中心溫度較高處解離成大小不一的銀顆粒，我們經由文獻觀察和量測的結果，提出了一個此結構的簡化模型；經由時域有限差分法（FDTD）的模擬，我們證實了此結構對於較小的記錄點會比傳統碟片有較佳的射頻信號。
我們亦根據傳統光碟片的繞射理論，提出一新的架構用於分析此近場結構，並用此理論進行射頻及偏軌信號的模擬；接著探討在有像差（aberration）產生的情形下，其對偏軌信號的影響，最後用有限時域差分法驗證在失焦（defocus） 下，偏軌信號的變化。

In this thesis, we analyzed super resolution near-field structure（Super-RENS） with AgOx as mask layer. AgOx will be decomposed to Ag particles with various sizes under higher temperature on the center of laser spot. According to the observation and estimation from the reference, we propose a simple model of Super-RENS. From the finite difference time domain（FDTD） simulation, we proved that it would be better RF signal than DVD’s under smaller recording mark size.
According to the diffraction theory used in DVD system, we propose a new theory to analyze the RF signal and tracking error signal of Super-RENS disk. Then we use simulate the tracking error signal under beam aberration. Finally we use FDTD method to simulate the tracking error signal at defocus.

Abstract
Table of contents
List of Figure

Chapter 1 Introduction
1.1 Motivation………………………………………………………………………1
1.2 Research Goals…………………………………………………………………2
1.3 Thesis Organization…………………………………………………………….2
Chapter 2 Basic Theory
2.1 The theory of super resolution near-field structure………….………………….4
2.2 Finite Difference Time Domain…………………………………………………5
2.3 Near to far field transformation…………………………………………………8
2.4 Operational signal………………………………………………………………9
Chapter 3 Super-RENS Model and RF Signal Simulation
3.1 Introductionl…………………………………………………………………….14
3.2 FDTD simulation………………………………………………………………..15
3.3 Diffraction theory of laser read-out system……………………………………..22
3.4 Use diffraction theory to analyze Super-RENS disk…………………………….29
Chapter 4 Tracking Error Signal Simulation
4.1 Introduction………………………………………………………………………35
4.2 Beam aberration………………………………………………………………….35
4.3 DPD signal in the presence of defocus…………………………………………..36
4.4 DPD FDTD simulation…………………………………………………………42
Chapter 5 Conclusion…………………………………………………………………..46
Reference………………………………………………………………………………..48

Reference

1.J. Tominaga, T. Nakano and N. Atoda, “An approach for recording and readout beyond the diffraction limit with an Sb film”, Appl. Phys. Lett. 73, pp.2078, 1998
2.J. Tominaga, H. Fuji, A. Sato, T. Nakano, T. Fukaya and N. Atoda, “The Near-Field Super-Resolution Properties of an Antimony Thin Film”, Jpn. J. Appl. Phys. 37, pp.1323, 1998
3.T. Nakano, A. Sato, H. Fuji, J. Tominaga and N. Atoda, “Transmitted signal detection of optical disks with a superresolution near-field structure”, Appl. Phys. Lett. 75, pp.151, 1999
4.H. Fuji, J. Tominaga, L. Men, T. Nakano, H. Katayama and N. Atoda, “A Near-Field Recording and Readout Technology Using a Metallic Probe in an Optical Disk”, Jpn. J. Appl. Phys. 39, pp.980, 2000.
5.H. H. Hopkins, “Diffraction theory of laser read-out systems for optical video discs”, J. Opt. Soc. Am. Vol.69, pp.4-24, 1979.
6.Joseph Braat, “Differential time detection for radial tracking of optical disks”, Applied Optics, Vol.37, No.29, pp.6973, 1998.
7.Chubing Peng, Wei-Hung Yeh, and M. Mansuripur, “Measurements and simulations of differential phase-tracking signals in optical disk data storage”, Applied Optics, Vol.37, No.20, pp.4425, 1998.
8.Wei-Chih Liu, Ming-Yaw NG, and D. P. Tsai, “Surface plasmon effects on the far field signals of AgOx-type super resolution near-field structure”, Jpn. J. Appl. Phys, Vol.43, Np.7B pp.4713 (2004)
9.Chubing Peng, “Superresolution near-field readout in phase-change optical disk data storage”, Applied Optics, Vol.40, No.23, pp.3922, 2001.
10.Fu Han Ho, Hsun Hao Chang, Yu Hsaun Liu, Bing-Mau Chen, Shyh-Yeu Wang, and Din Ping Tsai, “Functional structures of AgOx thin film for near-field recording” Jpn. J. Appl. Phys, Vol.42, No.2B, pp.1000, 2003.
11.G. Bouwhuis and J. Braat, “Video disk player optics”, Applied Optics, Vol.17, pp.1993, 1978.
12.J. Braat, “Read-out of optical discs”, in Principles of Optical Disc Systems, pp.7-87, 1985.
13.J. Braat and G. Bouwhuis, “Position sensing in video disk readout”, Applied Optics, Vol.17, pp.2022, 1978.
14.J. H. Kim, D. Buechel, T. Nakano, J. Tominaga and N. Atoda, H. Fuji, Y. Yamakawa, Magneto-optical disk properties enhanced by a nonmagnetic mask layer”, Applied Physics Letter, Vol.77, pp.1774, 2000.
15.Wei-Chih Liu, Ming-Yaw NG, and Din Ping Tsai, “Surface Plasmon Effects on the far-field signals of AgOx-type super resolution near field structure”, Jpn. J. Appl. Phys, Vol.43 No.7B, pp.4713, 2004.
16.Din Ping Tsai, Chih Wen Yang, Wei Chih Lin, Fu Han Ho, Hung Ji Huang, Ming Yish Chen, Tzu Feng Tseng, Chiu Hsiang Lee, and Chwei Jing Yeh, “Dynamic Aperture of Near field resolution structure”, Jpn. J. Appl. Phys, Vol.39, No.2B, pp.982, 2000.
17.Takashi Nakano, Yuzo Yamakawa, Junji Tominaga, and Nobufumi Atoda, “Near-Field optical simulation of super-resolution near-field structure disks”, Jpn. J. Appl. Phys, Vol.40, No.3B, pp.1531, 2001.
18.Kenji Tanaka, Toshifumi Ohkubo, Manabu Oumi, Yasuyuki Mitsuoka, Kunio Nakajima, Hiroshi Hosaka, and Kiyoshi Itao, “Numerical simulation on read-out characteristics of the planar aperture-mouted head with a minute scatterer”, Jpn. J. Appl. Phys, Vol.40, pp.1542, 2001.
19.Yung-Chiun Her, Yuh-Chang Lan, Wei-Chih Hsu, and Song-Yeu Tsai, “Reading and readout mechanisms of super-resolution near-field structure disk with a silver oxide mask layer”, Applied physics letter, Vol.83, No.11, pp.2137, 2003.
20.Wei-Chih Hsu, Mei-Rurng Tseng, Song-Yeu Tsai, and Po-Cheng Kuo, “Blue-laser readout properties of super resolution near field structure disc with inorganic write-once recording layer”, Jpn. J. Appl. Phys, vol.42, No.2B, pp.1005, 2003.
21.Yung-Chiun Her, Yuh-chang Lan, Wei-Chih Hsu, and Song-Yeu, Tsai, “Effect of constituent phases of reactively sputtered AgOx film on recording and readout mechanisms of super resolution near field structure”, J. Appl. Phys, Vol.96, No.3, pp.1283, 2004.
22.Kuang-Chao Fan, Chih-Liang Chu, and Jong-I mou, “Development of a low-cost autofocusing probe for profile profile measurement” Meas. Sci. Tech. 12, pp.2137, 2001.
23.Yung-Chiun Her, Yuh-Chang Lan, Wei-Chih Hsu, and Song-Yeu Tsai, “The characteristics of reactively sputtered AgOx films prepared at different oxygen flow ratios and its effect on super resolution near-field properties”, Jpn. J. Appl. Phys, Vol.43, No.1, pp.267, 2004.
24.Kuo Pin Chiu, Wei Chih Lin, Yuan Hsing Fu, Fin Ping Tsai, “Calculation of Surface Plasmon Effect on Optical Discs”, Jpn. J. Appl. Phys, vol.43, No.7B, pp.4730, 2004.
25.Kari Kataja, Juuso Olkkonen, Janne Aikio, and Dennis Howe, “Numerical Study of AgOx super resolution structure”, Jpn. J. Appl. Phys, Vol.43, No.1, pp.160, 2004.
26.Kari Kataja, Juuso Olkkonen, Janne aikio and Dennis Howe, “Readout Modeling of super resolution disks”, Jpn. J. Appl. Phys, Vol.43, No.7B, pp.4718, 2004.
27.Lique Men, Junji Tominaga, Hiroshi Fuji, and Nobufumi Atoda, “Oxygen Doping Effects on super resolution scattering mode near field optical data storage”, Jpn. J. Appl. Phys, vol.39, No.5A, pp.2639, 2000.
28.Junji Tominaga, Hiroshi Fuji, Akira Sato, Takashi Nakano, and Nobufumi Atoda, “The characteristics and the potential of super resolution near field structure”, Jpn. J. Appl. Phys, Vol.39, No.2B, pp.957, 2000.
29.Kenji Tanaka, Hiroshi Hosaka, Kiyoshi Itao, Manabu Oumi, Takashi Niwa, Tatsuyuki Mitsuika, and Kunio Nakajima, “Improvements in near field optical performance using localized surface plasmon excitation by a scatter-formed aperture” Applied physics letter, Vol.83, No.6, pp.11, 2003.