AC Stark Shifts of Dark Resonances Probed with Ramsey Spectroscopy

Abstract

The off-resonant AC Stark shift for coherent population trapping (CPT) resonances probed with Ramsey spectroscopy is investigated experimentally and theoretically. Measurements with laser-cooled ${}^{87}$Rb atoms show excellent quantitative agreement with a simple theory. The shift depends on the relative intensity of the two CPT light fields, but depends only weakly on the total intensity. Since the origin of the shift is through couplings of the interrogation light to off-resonant excited state hyperfine levels, the size and sign of the shift depend on the specific interrogation scheme. However, the simple theory shows that for several commonly used interrogation schemes the off-resonant shift goes to zero at specific values of this relative intensity.

arXiv comment7 pages, 7 figures

References in corpus (13)

• Hyper-Ramsey Spectroscopy of Optical Clock Transitions
• Coherent population trapping resonances with linearly polarized light for all-optical miniature atomic clocks
• On the unique possibility to increase significantly the contrast of dark resonances on D1 line of ${}^{87}$Rb
• High-performance coherent population trapping clock with polarization modulation
• A high-performance Raman-Ramsey Cs vapor cell atomic clock
• Coherent Population Trapping Resonances in Buffer Gas-filled Cs Vapor Cells with Push-Pull Optical Pumping
• Auto-Balanced Ramsey Spectroscopy
• Generalized auto-balanced Ramsey spectroscopy of clock transitions
• Limitations of long term stability in a coherent population trapping Cs clock
• Theoretical and experimental investigation of the light shift in Ramsey coherent population trapping
• Computational Studies of Light Shift in Raman-Ramsey Interference-Based Atomic Clock
• Compensation of Field-Induced Frequency Shifts in Ramsey Spectroscopy of Optical Clock Transitions
• Two-step pulse observation for Raman-Ramsey coherent population trapping atomic clocks

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• Experimental Demonstration of a Terahertz Frequency Reference based on Coherent Population Trapping
• In-situ ac Stark shift Detection in Light Storage Spectroscopy
• Doppler Shift Mitigation in a Chip-Scale Atomic Beam Clock
• Addition to the dynamic Stark shift of the coherent population trapping resonance