Linear dichroism signals due to the alignment in the ground state of hydrogen-like atoms and their inversion in a single-beam optical pumping scheme
arXiv:2504.20716 · doi:10.1103/wjyb-vf2y
Abstract
The results of a study of the dynamics of atomic moments alignment in cesium under optical pumping by linearly polarized resonant light in ultra-weak magnetic field are presented. It is shown that there are alignment components whose relaxation does not depend on spin-exchange broadening. The effect of suppression of spin-exchange relaxation in zero magnetic fields is detected, which is similar in its manifestations to the SERF (Spin-Exchange Relaxation Free) effect observed in orientation signals. This observation is interesting from the standpoint of general theory, since the law of conservation of angular momentum responsible for maintaining orientation in the SERF mode should not guarantee the preservation of alignment under the same conditions. A comparison with theoretically calculated parameters of SERF resonances in orientation is given. A qualitative explanation of the observed effect is presented.
15 pages, 8 figures
References in corpus (8)
- Testing gravity with cold atom interferometry: Results and prospects
- Advanced Laser Technology for Quantum Communications (Tutorial Review)
- Laser cooling for quantum gases
- A Synchronous Spin-Exchange Optically Pumped NMR-Gyroscope
- Zero-field optical magnetometer based on spin-alignment
- Zero-field magnetometry based on the combination of atomic orientation and alignment
- A method of laser frequency stabilization based on the effect of linear dichroism in alkali metal vapors in a modulated transverse magnetic field
- Magnetic quadrupole dichroism in isotropic medium