Research on the Preoaration of Microspheres of Optical Cavity Structure.

从染料掺杂微球的激光从荧光染料分子和形态依赖的共振之间的耦合进行。以苯三乙氧基硅烷（PTES）为原料，采用溶胶-凝胶技术制备了罗丹明6g掺杂的有机-无机杂化材料球形颗粒。从直径4 ~ 6 mm的颗粒中，通过泵送532 nm波长的脉冲激光，确认了598 nm波长的强激光发射。由于球形空腔结构要求粒径控制、圆度好、表面光滑，本研究对球形颗粒的制备技术进行了研究。制备染料掺杂粒子的加工步骤包括两大过程；(1) PTES水解聚合；(2)液滴固化。对于第二种工艺，开发了两种精细的制备染料掺杂微球的技术：(a)液相乳化技术，(b)气相振动孔技术。特别是振动孔技术使我们获得了单分散的光学腔结构微球。

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.