Spectroscopy of cesium Rydberg atoms in strong radio-frequency fields
Abstract
We study Rydberg atoms modulated by strong radio-frequency (RF) fields with a frequency of 70 MHz. The Rydberg atoms are prepared in a room temperature cesium cell, and their level structure is probed using electromagnetically induced transparency (EIT). As the RF field increases from the weak- into the strong-field regime, the range of observed RF-induced phenomena progresses from AC level shifts through increasingly pronounced and numerous RF-modulation sidebands to complex state-mixing and level-crossings with high-l hydrogen-like states. Weak anharmonic admixtures in the RF field generate clearly visible modifications in the Rydberg-EIT spectra. A Floquet analysis is employed to model the Rydberg spectra, and good agreement with the experimental observations is found. Our results show that all-optical spectroscopy of Rydberg atoms in vapor cells can serve as an antenna-free, atom-based and calibration-free technique to measure and map RF electric fields and to analyze their higher-harmonic contents.
Keywords
Cite
@article{arxiv.1601.01748,
title = {Spectroscopy of cesium Rydberg atoms in strong radio-frequency fields},
author = {Yuechun Jiao and Zhiwei Yang and Jingkui Li and Georg Raithel and Jianming Zhao and Suotang Jia},
journal= {arXiv preprint arXiv:1601.01748},
year = {2017}
}
Comments
6 pages, 5 figures