Effects of inert background gases and photo-illumination on three-color electromagnetically induced transparency of rubidium vapor
- URL: http://arxiv.org/abs/2506.05656v1
- Date: Fri, 06 Jun 2025 01:15:26 GMT
- Title: Effects of inert background gases and photo-illumination on three-color electromagnetically induced transparency of rubidium vapor
- Authors: Alisher Duspayev, Bineet Dash, Georg Raithel,
- Abstract summary: Rydberg electromagnetically induced transparency (EIT) of room-temperature Rb vapor in the presence of inert gases is studied.<n>The work is of interest in the spectroscopic study of mixed-species warm vapors, in sensing applications of Rydberg atoms in vapor cells, and in non-invasive electric-field diagnostics of low-pressure discharge plasma.
- Score: 0.8192907805418583
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Three-color Rydberg electromagnetically induced transparency (EIT) of room-temperature Rb vapor in the presence of inert gases (Ar, Ne, and N$_2$) at 50~mTorr and 500~mTorr is investigated. The observed EIT lines shift and develop blue-detuned satellite lines, dependent on inert-gas species and pressure. The separations of the satellite from the main EIT lines are approximately pressure-independent, while their strength increases with inert-gas pressure. The satellite lines are attributed to hyperfine collisions of the intermediate $5D_{3/2}$ state. Further, analyzing the Stark effect of Rydberg levels, it is found that the inert gases suppress static electric fields in the vapor cells, which we induce by photo-illumination of the cell walls with an auxiliary 453-nm laser. In the work, we utilize Rydberg levels with principal quantum numbers $n$ = 25 and 50 and angular momenta $\ell$ = 3 up to 6, excited by the EIT lasers and optional radio-frequency dressing fields. The work is of interest in the spectroscopic study of mixed-species warm vapors, in sensing applications of Rydberg atoms in vapor cells, and in non-invasive electric-field diagnostics of low-pressure discharge plasma.
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