1998 Fiscal Year Final Research Report Summary
Research on the Preoaration of Microspheres of Optical Cavity Structure.
| Project/Area Number |
09450241
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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 | 一般 |
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| Research Field |
Inorganic materials/Physical properties
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| Research Institution | TOKYO INSTITUTE OF TECHNOLOGY |
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Principal Investigator |
SHIBATA Shuichi Tokyo Institute of Technology, Graduate School of Science and Engineering, Associate Professor., 大学院・理工学研究科, 助教授 (00235574)
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| Co-Investigator(Kenkyū-buntansha) |
YANO Tetsuji Tokyo Institute of Technology, Graduate School of Science and Engineering, Assis, 大学院・理工学研究科, 助手 (90221647)
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| Project Period (FY) |
1997 – 1998
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| Keywords | Spherical Optical Cavity, / Organic-Inorganic Hybrid Material, / Microsphere, / Sol-Gel Method, / Laser Dyes, |
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| Research Abstract |
Lasing from a dye-doped microsphere was performed from the coupling between fluorescent dye molecules and morphology-dependent-resonances. Using phenyl triethoxy silane (PTES) as a starting material, I made Rhodamine 6G-doped spherical particles of organic-inorganic hybrid material by sol-gel technique. From the particles of 4-6 mm in diameter, a strong laser emission at 598 nm wavelength was confirmed by pumping a pulse laser light of 532 nm wavelength.
Since particle size control, good circularity, smooth surface are required for the spherical cavity structure, in this study, the formation techniques for preparing spherical particles have been investigated. Processing steps for preparing dye-doped particles are consisted of two major processes ; (1) Hydrolysis and polymerization of PTES, and (2) Solidification of liquid droplets. For the second process two elaborate techniques to make dye-doped microspheres were developed : (a) Emulsion technique in liquid phase, (b) Vibrating orifice technique in gas phase. Especially the vibrating orifice technique enables us to obtain monodispersed microspheres of optical cavity structure.
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