Modeling Line Broadening and Distortion Due to Spatially Non-Uniform Fields in Rydberg Electrometry

Abstract

We present a model for calculating broadened Autler-Townes spectra when probing ac electric field magnitudes by use of Rydberg atom electromagnetically-induced transparency. This model approximates the atom vapor as a multi-layered media and uses Beer's law to combine probe beam absorption through many discrete thin segments, replicating the broadening seen in experimental measurements. The methodology can be easily applied to other non-uniform optical parameters when monitoring total spectral transmission or phase delay. Field non-uniformity is present in standing waves of unmatched waveguides and glass vapor cells, which are generally due to source characteristics and environmental reflections. We present broadening and distortion effects caused by various types of electric-field distributions, and compare this model to results obtained from measured atomic spectra.

8 pages, 6 figures

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Cited by in corpus (5)

• High-angular-momentum Rydberg states in a room-temperature vapor cell for DC electric-field sensing
• Imaging of induced surface charge distribution effects in glass vapor cells used for Rydberg atom-based sensors
• Determining angle of arrival of radio frequency fields using subwavelength, amplitude-only measurements of standing waves in a Rydberg atom sensor
• Determination of Quantum Defects and Core Polarizability of Atomic Cesium via Terahertz and Radio-Frequency Spectroscopy in Thermal Vapor
• Modulation transfer protocol for Rydberg RF receivers