Abstract
The absorption of linearly polarized light by 133Cs atoms is desired to be well known in many applications of atomic physics. For implementing this requirement, a simplified analytical form for the absorption of linearly polarized light by 133Cs atoms with optically resolved hyperfine structure is derived. Based on the obtained analytical form, optical absorption cross-sections of 133Cs atoms are simulated. An experiment is designed to further study the absorption of linearly polarized light by 133Cs atoms. Theory and experiment show that the influence of linearly polarized light on the distribution of 133Cs atoms will in turn affect the optical absorption. In order to demonstrate this kind of influence, an example for the measurement of the 133Cs vapor density is shown theoretically and experimentally, and a method of polynomial fit is proposed to reduce this influence.
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