THz electrometry with Rydberg atoms and all IR lasers

Shuying Chen,Dominic Reed,Lucy A. Downes,Andrew R. MacKellar,Nourah F. Almuhawish, Matthew J. Jamieson,Charles S. Adams,Kevin J. Weatherill

2021 46TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES (IRMMW-THZ)（2021）

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摘要

Rydberg electromagnetically induced transparency (EIT) and Autler-Townes (AT) splitting in an atomic vapor cell can be used as novel methods for electric-magnetic field detection. Here we make use of 3 infrared lasers to realize a Rydberg EIT system in a thermal rubidium vapor cell. With the AT splitting induced by the THz radiation, we observe a linear trend between THz field amplitude and the frequency splitting of the absorption dips and EIT transmission peaks. Due to the well-known atomic transition dipole moment of the Rydberg state, the THz electric field can be calibrated from the frequency splitting, making this Rydberg atomic measurement system a practical tool for THz field detection.

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关键词

atomic vapor cell,electric-magnetic field detection,Rydberg EIT system,thermal rubidium vapor cell,AT splitting,THz radiation,linear trend,THz field amplitude,frequency splitting,absorption dips,EIT transmission peaks,atomic transition dipole moment,Rydberg state,THz electric field,Rydberg atomic measurement system,THz field detection,electrometry,Rydberg atoms,IR lasers,transparency,Autler-Townes

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