量子波包干涉仪的实验技术研究

Experimental Techniques for Quantum Wavepacket Interferometer

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 quantum wavepacket interference in rare earth ions is observed with dual-channel correlation spectroscopic technique using a femtosecond laser. The measured dephasing time of Eu 3+ ions in Y 2O 3∶Eu 3+ at room temperature is longer than 3 picoseconds, and the quantum wavepacket interference is recorded in the free-induction decay process of Eu 3+ ions. Some systematic errors in the experiments are discussed and the solutions are suggested. Experimental skills are reported.