Ramsey spectroscopy of high-contrast CPT resonances with push-pull optical pumping in Cs vapor

Abstract

We report the detection of high-contrast and narrow Coherent Population Trapping (CPT) Ramsey fringes in a Cs vapor cell using a simple-architecture laser system. The latter allows the combination of push-pull optical pumping (PPOP) and a temporal Ramsey-like pulsed interrogation. An originality of the optics package is the use of a single Mach-Zehnder electro-optic modulator (MZ EOM) both for optical sidebands generation and light switch for pulsed interaction. Typical Ramsey fringes with a linewidth of 166 Hz and a contrast of 33 % are detected in a cm-scale buffer-gas filled Cs vapor cell. This technique could be interesting for the development of high-performance and low power consumption compact vapor cell clocks based on CPT.

9 pages, 8 figures

References in corpus (2)

• Metrological characterization of the pulsed Rb clock with optical detection
• Coherent Population Trapping Resonances in Buffer Gas-filled Cs Vapor Cells with Push-Pull Optical Pumping

Cited by in corpus (11)

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• Computational Studies of Light Shift in Raman-Ramsey Interference-Based Atomic Clock
• Effect of atomic diffusion on the Raman-Ramsey CPT resonances
• Estimating energy levels of a three-level atom in single and multi-parameter metrological schemes
• Spin Squeezing Induced Enhancement of Sensitivity of an Atomic Clock using Coherent Population Trapping
• Atomic Ramsey interferometry with S- and D-band in a triangular optical lattice
• Transit Ramsey EIT resonances in a Rb vacuum cell
• Addition to the dynamic Stark shift of the coherent population trapping resonance
• Characterization of frequency stability in EIT-based atomic clocks using a differential detection scheme