利用双通道飞秒相关测量技术研究了稀土材料中的量子波包干涉现象。测得稀土粉末样品Y2 O3∶Eu3 + 中Eu3 + 离子常温下的退相时间大于 3ps ,并观测到Eu3 + 离子自由感应衰减 (FID)过程的量子波包干涉现象。分析和讨论了实验中的系统误差来源及其消除方法 ,并介绍了相应的实验技术改进措施。 The double-channel femtosecond correlation measurement technique was used to study the phenomenon of quantum wave packet interference in rare earth materials. The phase-out time of Eu3 + ion in Y2 O3:Eu3 + sample is more than 3 ps at room temperature, and the phenomenon of quantum wave interference is observed in the free-induced decay (FID) of Eu3 + ion. The sources of systematic errors in the experiment and their elimination methods were analyzed and discussed. Corresponding improvements in experimental techniques were also introduced.