Investigation on the Cs 6S1=2 to 7D electric quadrupole transition via monochromatic two-photon process at 767 nm

TL;DR

This paper experimentally investigates the cesium 6S1/2 to 7D electric quadrupole transition at 767 nm using a monochromatic two-photon process, providing precise measurements of hyperfine constants relevant for atomic physics and parity non-conservation studies.

Contribution

The study demonstrates a novel single-laser two-photon excitation method for cesium and accurately determines hyperfine constants for the 7D states, advancing atomic structure understanding.

Findings

Precise hyperfine constants for 7D3/2 and 7D5/2 states obtained.

Optimized experimental parameters for high-resolution transition detection.

Agreement with previous measurements confirms method validity.

Abstract

We experimentally demonstrate the cesium electric quadrupole transition from the 6S1/2 ground state to the 7D3/2,5/2 excited state through a virtual level by using a single laser at 767 nm. The excited state energy level population is characterized by varying the laser power, the temperature of the vapor, and the polarization combinations of the laser beams. The optimized experimental parameters are obtained for a high resolution transition interval identification. The magnetic dipole coupling constant A and electric quadrupole coupling constant B for the 7D3/2,5/2 states are precisely determined by using the hyper ne levels intervals. The results, A = 7.39 (0.06) MHz, B = -0.19 (0.18) MHz for the 7D3/2 state, and A = -1.79 (0.05) MHz, B =1.05 (0.29) MHz for the 7D5/2 state, are in good agreement with the previous reported results. This work is beneficial for the determination of atomic structure information and parity non-conservation, which paves the way for the field of precision measurements and atomic physics.