Optical Coupling of Waveguide with the Super-Sphere of Glass Optical Resonator through the Near Field Optical Gate

采用离子交换法在氧化物玻璃衬底上制备了埋入式光波导，并利用与STM探针电极接触的电场将波导芯层中的Ag+离子引出。在波导上制备了不同尺寸的光闸，并分别用原子力显微镜和光学显微镜观察了光闸的形貌和波导中传输光的输出效率。被引出的碱金属离子在探针电极上发生电化学反应，转化为金属液滴，并在玻璃表面刻蚀成火山口形状，反映了探针尖端延伸的电场。FE-SEM分析还表明，部分提取的Ag+离子转化为金属态，并在破火山口表面形成纳米颗粒。光传播实验清楚地表明，光是从 ...更多信息 采用5 nC以上的热处理工艺制备了光闸，保证了芯层中Ag+离子的精细分布能够很好地用作埋层波导的光闸，并利用表面张力模塑（StM）技术制备了微米级超球形玻璃颗粒。由于高折射率玻璃具有较高的析晶倾向，因此，对高折射率玻璃的温度处理也进行了优化。所制备的玻璃超球表面光滑，球形度好，适合于光学谐振腔的要求。同时，还利用StM技术制备了含有光学活性掺杂离子的微米级超球。这些微超球的激光激发实验显示了基于回音壁模式的高Q值振荡，并作为一种激光装置。它们被证实是适用于光耦合的光闸上的掩埋型光波导制备的离子交换处理，使用电场和SPM探针作为电极。少

Buried-type optical waveguide was fabricated in the oxide glass substrate by the ion-exchange treatment, and Ag+ ions in the core of the waveguide were extracted by the electric field from the contacted STM probe electrode. As a result, the optical gates with various sizes were prepared on the waveguide, and their appearance and the output efficiency of the propagating light in the waveguide were examined by atomic force microscope, and optical microscope, respectively. The extracted alkali ions, which are followed by the movement of Ag+ ions, were converted into metal droplet by the electrochemical reaction on the probe electrode, and etched the glass surface into the caldera shape, which reflects the electric field extending from the probe tip. FE-SEM analysis also showed that some parts of the extracted Ag+ ions were converted into the metallic state and form the nano-particles on the caldera surface. The light propagation experiment clearly showed that the light was emitted from th … More e prepared optical gate by the treatment over 5 nC, and ensured that the prepared fine profiles of Ag+ ions from the core work well as the optical gate of the buried-type waveguide.Micrometer-sized super-spherical glass particles were also fabricated using the glass with high refractive index by Surface-tension Mold (StM) technique. The temperature treatment was also optimized for the high refractive index glasses because they have relatively high crystallization tendency. The fabricated glass super-spheres were found to have smooth surface and good sphericity suitable for the optical resonator. Micrometer-size super-spheres containing optically active dopant ions were also prepared by StM technique. Laser excitation experiments of these micro-super spheres showed the oscillations based on the Whispering Gallery Modes with high Q-factor, and acted as a laser devises. They are confirmed to be applicable for the optical coupling with the optical gates on the buried-type optical waveguide prepared by the ion-exchange treatment using the electric field and SPM probes as an electrode. Less