2002 Fiscal Year Final Research Report Summary
PREPARATION OF MICROSPHERES FOR OPTICAL CAVITY STRUCTUTRE AND THEIR APPLICATIONS
| Project/Area Number |
12555246
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
無機工業化学
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| Research Institution | TOKYO INSTITUTE OF TECHNOLOGY |
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Principal Investigator |
SHIBATA Shuichi TOKYO INSTIYUTE OF TECHNOLOGY, DEPT. OF CHEMISTRY AND MATERIALS SCIENCE, PROFFESOR, 大学院・理工学研究科, 教授 (00235574)
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| Co-Investigator(Kenkyū-buntansha) |
YANO Tetsuji TOKYO INSTIYUTE OF TECHNOLOGY, DEPT. OF CHEMISTRY AND MATERIALS SCIENCE, ASSOCIATE PROFFESOR, 大学院・理工学研究科, 助教授 (90221647)
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| Project Period (FY) |
2000 – 2002
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| Keywords | Microsphere / Spherical Optical Cavity / Sol-Gel method / Vibrating Orifice Technique / Hybrid Material / Optical Resonance / Optical Waveguide / Optical Communication |
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| Research Abstract |
By the Vibrating Orifice Technique (A cylindrical liquid jet passing through the orifice of 10-20μm in diameter breaks up into equal-sized droplets by mechanical vibration of high frequency), equal-sized hybrid microsphers of several micrometer in diameter were successflly fabricated. These microsphers meet the optical cavity requirements : mono-dispersed and showed highly transparent and good sphricity.
The following achievements were accomplished.
(A) Lasing was performed in dye-doped microspheres prepared from phenyltriethoxy silane as a starting material. Most stable conditions of lasing were clarified : dye content and excitation laser power. Dyes were Rhodamine 6G, DCM and Pyridine 1. After 240,000 pulse shot (about 7 hour-irradiation), the initial lasing power intensity decreased to 50%.
(B) Encapsulation of light need high relative refractive index >1.5 between microsphere here and the surrounding media. Thus the microsphere itself is required index >2.0. Hybrid microspheres of refractive index >2.0 was developed
(C) Optical waveguide of hybrid materials were made by the photolithography technique and the excitation of microsphere was performed using the waveguide.
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