NANO PARTICLE-DOPED MICROSPHERES FOR OPTICAL CAVITY

作为光学腔体结构的微球可以实现超高品质因子（Q值），从而在腔体中实现光与材料的最终相互作用。本研究得到以下结果：(1)微球激励(a)将弯曲单模光纤简写埋在树脂中，制成光纤耦合器到球体。在耦合器上设置高折射率玻璃球（n_D=1.93），观察到光纤和玻璃球产生的共振拉曼散射。(b)在高折射率玻璃球（n_D=1.93，直径30μm）上进行镀膜，镀膜层上形成的平台部分显著提高了拉曼散射强度。通过这个球体，实现了受激拉曼发射。(2)纳米掺杂微球的制备。采用溶胶-凝胶法制备了氧化金纳米粒子。它们可以稳定地结合到混合微球中。

Ultra-high Quality factor (Q value) can be accomplished in a microsphere as optical cavity structure, thus in the cavity ultimate interaction between light and materials is achieved. The following results were obtained by this research.(1) Excitation of microsphere(a) Optical fiber coupler to a sphere was fabricated by abbreviation of bending single-mode optical fiber that was buried in a resin. High refractive index glass spheres (n_D=1.93) were set up on the coupler, and Resonant Raman scattering originated from optical fiber and glass sphere were observed.(b) Coating was carried out on the high-index glass sphere (n_D=1.93, diameter 30μm), and the terrace portion formed on the coating layer was dramatically increased the Raman scattering intensity. By this sphere, Stimulated Raman emission achieved.(2) Fabrication of nanoparticle-doped maicrospheres.Gold and ZnO nanoparticles was prepared by the sol-gel technique. They can be incorporated stably into the hybrid microspheres.