| Project/Area Number |
16560037
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied optics/Quantum optical engineering
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| Research Institution | Tokai University |
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Principal Investigator |
GOTO Kenya Tokai Univ., High-Technology for Human Welfare, Professor, 開発工学部, 教授 (20234982)
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| Project Period (FY) |
2004 – 2005
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| Project Status |
Completed (Fiscal Year 2005)
|
| Budget Amount *help |
¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 2005: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 2004: ¥1,800,000 (Direct Cost: ¥1,800,000)
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| Keywords | optical data storage / near-field optics / nano fabrication / FTDT simulation / surface plasmon polariton wave / VCSEL array / micro optics / optical disk / 超高速記録・再生技術 / 超微細開口技術 / GaPマイクロレンズ / 表面プラズモン / 分散関係 / 近接場光記録 / 近接場光発生効率 / 表面プラズモン・ポラリトン / 面発光レーザー / 共鳴増強効果 / エバネッセント光 / ナノ加工 / 回折格子(グレーティング) |
|---|
| Research Abstract |
Higher density optical disk system of super parallel optical heads using a two dimensional VCSEL array are described for the higher data transfer rate and technological capability. Optical heads of the VCSEL array and microlens array play a key role to get higher evanescent light from a small aperture for the optical disk system, of which disk surface is coated with a lubricant and protective film on the flat recording medium in order to keep the gap between the super-parallel optical head and the disk surface within 20nm. Higher throughput efficiency has been obtained in the near-field semiconductor optical probe array head. However, the obtained evanescent light power is about 10μW from the 100nm probe aperture using a VCSEL 1mW laser output power, which is still not enough to write bits on the phase change optical disk medium. One solution for improvement of the writing power is to develop a special nano-fabricated corrugated thin metal film for higher throughput efficiency by surface plasmon polariton enhancement. A metal fine grating fabrication method to get evanescent light wave resonantly enhancement has been studied with a FDTD simulation result.
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