1998 Fiscal Year Final Research Report Summary
Lightwave manipulation by organic nonlinear optical materials
| Project/Area Number |
07246104
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| Research Category |
Grant-in-Aid for Scientific Research on Priority Areas
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| Allocation Type | Single-year Grants |
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| Research Institution | Tokyo University of Agriculture and Technology |
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Principal Investigator |
MIYATA Seizo Tokyo Univ. of Agri. & Tech., Graduate School of Bio-Applications and Systems Engineering, Professor, 大学院・生物システム応用科学研究科, 教授 (90015066)
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| Co-Investigator(Kenkyū-buntansha) |
SASAKI Takatomo Osaka University, Faculty of Technology, Professor, 工学部, 教授 (50029237)
NAKANISHI Hachiro Tohoku University, Faculty of Technology, Professor, 反応化学研究所, 教授 (50240651)
ITO Ryoichi University of Tokyo, Faculty of Technology, Professor, 工学部, 教授 (40133102)
SASABE Hiroyuki The Institute of Physical and Chemical Research, Head, 主任研究員 (20015126)
YATAGAI Toyohiko Tsukuba University, Faculty of Technology, Professor, 物理工学系, 教授 (90087445)
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| Project Period (FY) |
1998
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| Keywords | nonlinear optical effects / lightwave manipulation / organic material / frequency conversion / light modulation / photorefractive effect / phase / wavefront |
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| Research Abstract |
As current communication systems are becoming more powerful and complex, optical technology is expected to contribute significantly to the future electronic information processing network. The objective of this research is to develop light manipulation devices such as frequency manipulation device, phase and intensity manipulation device and wavefront manipulation device.
In this project, wide variety of second-order NLO materials, photorefractive materials, optical waveguide and polymer optical fibers, and novel materials consisting of chiral group were developed. Organic ionic salts possess large optical nonlinearity with relatively low cut off wavelength. Nano particles of organic crystal are prepared with negative charge and χィイD1(3)ィエD1 of nanocrystals found to be 10ィイD1-7ィエD1 esu. Efficient phase and intensity manipulation device were prepared by crystal cored fiber. In addition novel optical modulators based on chiral nonlinearity were developed. The very stable NLO polymers consisting of α-helix polypeptide were synthesized and a sub-micron χィイD1(2)ィエD1 grating structure was fabricated by self-assembly technique to achieve high conversion efficiency and high bandwidth modulation.
We have developed multifunctional chromophores which enables us to obtain "monolithic photorefractive materials" The efficient photorefractive effects allow us to demonstrate imagereconstruction and optical associative memory. Optical space modulator was fabricated by using poled polymer photonic crystal.The sensitivity of this space modulation and response time were improved more than 10 times by coupling with cavity structure.
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Research Products
(26 results)
