Development of Optical Recording System Based on the Local-Field Control

基于局域场控制的光记录系统的研制

• 批准号: 05555006
• 负责人: MIYANO Kenjiro
• 金额: $ 6.78万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-05555006/
• 关键词: local field; optical recording; local-field factor; electroabsorption; ferroelectric polymer; dye aggregate; LB technique; 高調波スペクトル; 有機色素; 平均場近似; 単分子膜; 水面上蒸着

The optical recording involving the organic dyes is usually based on the spectral change of the dye molecule itself, e.g., photochromism under photo-isomerization. Therefore, the design and synthesis of the dye molecule is of prime importance which could be a hard task. The purpose of the current study is to understand the effect of the local field on the spectrum of a dye molecule and use it for the opptical recording instead. The project is devided into two parts ; one for understanding the local field both experimentally and theoretically and two for demonstrating the effect.1.Sample Preparation : The Langmuir-Blodgett (LB) techniques are mainly used along with the vacuum deposition. A novel LB method without using a spreading solvent has been developed for the indissoluble molecules.2.Local-Field Measurement : The second-harmonic generation (SHG) dfficiency is used to evaluate the local-field contribution to the dye spectrum. The electroabsorption is measured to estimate the local-field factor in gerroelectric polymers.3.Theory : A simple molecular layr model is used to interprete the experimental data in Sec.2.The J-aggregate of dyes has been taken as a model system with the extremely strong local field. The successful reproduction of the absorption, emission, and the resonance Rayleigh scattering spectra shows that our model is realistic.4.Demonstration : Layred structures of ferroelectric polymers and dyes are fabricated using the LB technique. The absorption change of a few % driven by the remanent field can be seasily observed.

项目成果

A.Nabetani, A.Tomioka, H.Tamaru, K.Miyano: "Optical Properties of Two-Dimensional Dye Aggregate" J.Chem.Phys.102 (13). 5109-5117 (1995)

A.Nabetani、A.Tomioka、H.Tamaru、K.Miyano：“二维染料聚集体的光学性质”J.Chem.Phys.102 (13)。

Nabetani: "Optical Properties of Two-Dimensional Dye Aggregate" J. Chem. Phys.102. 5109-5117 (1995)

Nabetani：“二维染料聚集体的光学特性”J. Chem。

K.Hasegawa, A.Tomioka, K.Miyano, and I.Seo: "Electroabsorption Study of Ferroelectric Polymer" Jpn.J.Appl.Phys.34 (10). 5647-5652 (1995)

K.Hasekawa、A.Tomioka、K.Miyano 和 I.Seo：“铁电聚合物的电吸收研究”Jpn.J.Appl.Phys.34 (10)。

K.Minoshima, M.Taiji, A.Ueki, K.Miyano, and T.Kobayashi: "Direct Interferometric Measurements of Femtosecond Time-Resolved Dispersion Relations in J-Aggregates" Nonlinear Opt. 14. 39-46 (1995)

K.Minoshima、M.Taiji、A.Ueki、K.Miyano 和 T.Kobayashi：“J 聚集体中飞秒时间分辨色散关系的直接干涉测量”非线性选项。

Hasegawa: "Optical Detection of Local Field in Vinylidene Fluoride Copolymer" Appl.Phys.Lett.66. 775-777 (1995)

长谷川：“偏二氟乙烯共聚物局部场的光学检测”Appl.Phys.Lett.66。