Rydberg electromagnetically induced transparency of $^{85}$Rb vapor in Ar, Ne and N$_2$ gases

• URL: http://arxiv.org/abs/2408.11648v1
• Date: Wed, 21 Aug 2024 14:17:57 GMT
• Title: Rydberg electromagnetically induced transparency of $^{85}$Rb vapor in Ar, Ne and N$_2$ gases
• Authors: Bineet Dash, Nithiwadee Thaicharoen, Eric Paradis, Alisher Duspayev, Georg Raithel,
• Abstract summary: Rydberg electromagnetically induced transparency (EIT) in rubidium (Rb) vapor cells containing inert gases at pressures $le 5$ Torr is reported. We measure frequency shift and line broadening of the EIT spectra in Rb vapor cells with argon, neon or nitrogen gases at pressures ranging from a few mTorr to 5 Torr. Results are important for establishing Rydberg-EIT as an all-optical and non-intrusive spectroscopic probe for field diagnostics in low-pressure radio-frequency discharges.
• Score: 0.6990493129893112
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: An experimental study on Rydberg electromagnetically induced transparency (EIT) in rubidium (Rb) vapor cells containing inert gases at pressures $\le 5$ Torr is reported. Using an inert-gas-free Rb vapor cell as a reference, we measure frequency shift and line broadening of the EIT spectra in Rb vapor cells with argon, neon or nitrogen gases at pressures ranging from a few mTorr to 5 Torr. The results qualitatively agree with a pseudo-potential model that includes $s$-wave scattering between the Rydberg electron and the inert-gas atoms, and the effect of polarization of the inert-gas atoms by the Rydberg atoms. Our results are important for establishing Rydberg-EIT as an all-optical and non-intrusive spectroscopic probe for field diagnostics in low-pressure radio-frequency discharges.

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