可搬运原子微波电场测量仪

A Transportable Rydberg Atomic Microwave Electrometry

近年来,基于里德堡原子的微波电场测量研究进展迅速,将光学平台上的原子微波电场测量系统一体化和集成化是工程应用的前提条件。据此,本文介绍了里德堡原子微波电场测量原理以及确定跃迁共振频率的方法,同时结合852 nm激光调制转移稳频和509 nm激光电磁诱导透明稳频方案研制了可搬运的原子微波电场测量仪。利用此仪器,演示了直接溯源至国际标准单位制的微波电场测量以及微弱微波信号的探测。

The research of the microwave electrical field measurement which is based on the Rydberg atoms is developing fast during recent years.The prerequisite for the engineering application is the minimization and integration of the microwave electrical field measurement systems.This article introduces the basic characteristics of the Rydberg atoms,the fundamental principles of the microwave electrical field measurement,and the method of determining the resonant frequency of the transition.In addition,a transportable Rydberg atomic microwave electrometry is developed by combing the 852 nm modulation transfer frequency stabilization and 509 nm electromagnetically induced transparency frequency stabilization.Based on this instrument,we demonstrate the microwave electrical field measurement which is traced back to the standard international unit systems and the detection of the weak microwave signal.