掺苝聚合物微球的制备及研究

为了获得高Q值激光器，利用光学微球谐振腔具有高Q值、低阈值和利于集成化等优点，制备了掺苝聚合物微球。通过改变实验试剂的用量，实现了对微球直径的控制。研究表明：所制备的微球表面光滑，形貌特征完好，是优良的回音壁腔体；在飞秒激光泵浦下，无论是单个微球还是聚集的微球都能激发出激光，具有良好的应用前景。

Preparation and research of perylene-doped polymer microspheres

Optical microsphere resonator has the advantages of high quality factor (Q), low threshold, and easy to integrate. In order to make better use of microsphere resonator, high Q laser can be obtained.In this paper, we successfully prepared perylene doped polystyrene microspheres by solvent-nonsolvent fast injection method.By using this method the diameter of the microspheres can be easily adjusted by changing the parameters of experiments. The microspheres have a smooth surface and intact morphological features, which facilitate whispering gallery modes generation in the sphere cavities.Under the femtosecond laser pumping, we can easily obtain the laser signals from either single microsphere or aggregated microspheres, which shows promising applications.