High contrast resonances of the coherent population trapping on sublevels of the ground atomic term

TL;DR

This paper reports the detection and analysis of narrow, high contrast coherent population trapping resonances in cesium atoms, which have potential applications in atomic frequency standards, magnetometers, and high-resolution spectroscopy.

Contribution

It presents the observation and detailed analysis of high contrast CPT resonances on ground state sublevels in cesium, highlighting their potential practical applications.

Findings

Detected narrow, high contrast CPT resonances in cesium vapor.

Resonances are determined by trapped atomic populations on specific ground sublevels.

Potential applications in atomic clocks, magnetometers, and high-resolution spectroscopy.

Abstract

We have detected and analyzed narrow, high contrast coherent population trapping resonances, which appear in transmission of the probe monochromatic light beam under action of the counterpropagating two-frequency laser radiation, on example of the nonclosed three level {\Lambda}-system formed by spectral components of the Doppler broadened D2 line of cesium atoms (in the cell with the rarefied Cs vapor). These nontrivial resonances are determined directly by the trapped atomic population on the definite lower level of the {\Lambda}-system and may be used in atomic frequency standards, sensitive magnetometers and in ultrahigh resolution laser spectroscopy of atoms and molecules.