通过水热法在溅射了一层金的Si片上生长了ZnO纳米棒。实验观察到ZnO纳米棒的室温光致发光谱中出现了强的紫外发射峰,同时还伴随有弱的缺陷相关的发射,这表明通过该种方法生长的ZnO纳米棒晶体质量较好。同时,通过光泵浦也观察到了ZnO纳米棒中的激光发射。当激发光功率密度超过阈值,且进一步增加时则出现多个发射峰,其积分强度随着激发功率密度的增大呈非线性增长,进一步表明存在受激发射。利用金属层作为反射镜可以进一步降低损耗,从而达到降低阈值的目的。 ZnO nanorods were grown on Si wafers sputtered with gold by hydrothermal method. It was observed experimentally that the strong UV emission peak appeared at room temperature photoluminescence spectra of ZnO nanorods, accompanied by the weak defect-related emission, indicating that the ZnO nanorod crystals grown by this method have better quality. At the same time, laser emission in ZnO nanorods was also observed by optical pumping. When the power density of the excitation light exceeds the threshold value and further increases, multiple emission peaks appear, and their integral intensities increase non-linearly with the increase of the excitation power density, further indicating the existence of stimulated emission. The use of metal layer as a mirror can further reduce the loss, so as to achieve the purpose of lowering the threshold.