中文摘要：

利用铯里德堡原子的电磁诱导透明光谱实现了对微波电场空间分布的高分辨测量。在铯蒸汽池中共线的耦合光和探测光形成了6S1/2-6P3/2-47D5/2阶梯型三能级系统,6.95GHz微波电场将诱导47D5/2到48P3/2的跃迁,使得阶梯型三能级系统的电磁感应透明光谱发生Autler-Townes分裂。获得了Autler-Townes分裂峰之间的间隔与微波源输出功率的关系,并且进行了铯泡内部微波电场空间分布的测量,空间分辨率达到λMW/430.利用时域有限积分电磁计算方法对该空间内的微波电场分布进行了数值模拟,理论模拟值与实验测量结果吻合得很好。

英文摘要：

We present the high-resolution spatial measurement of microwave electric field in cesium atomic vapor cell based on the electromagnetically induced transparency（EIT）spectrum of Cs Rydberg atom.The microwave electric field with the frequency of 6.95 GHz couples the Rydberg transition of 47D5/2→48P3/2.The EIT spectrum of a 6S1/2-6P3/2-47D5/2ladder system will split because of the Autler-Townes effect.We investigate the dependence of Autler-Townes splitting separation on the microwave electric fields strength and measured the spatial distribution of microwave electric field in the vapor cell.The theoretical maximum spatial resolution is aboutλMW/430.We numerically simulate the fields strength with the finite element calculations which agree well with the measurement results.