Numerical simulation of wall relaxation in Rb vapor optically pumped with 21Ne

International Scientific Seminars on "Fundamental and Applied Problems of Photonics and Condensed Matter Physics"

Dolgopyatov, D.A.^1 ; Navasardyan, E.S.^1 ; Arkharov, I.A.^1

Bauman Moscow State Technical University, 2nd Baumanskaya St.

5, Moscow

105005, Russia^1

关键词: Cell geometries;    Cell pressure;    Cell temperature;    Experimental conditions;    Inhomogeneities;    Laser beam power;    Optically pumped;    Relaxation rates;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/584/1/012027/pdf
DOI  :  10.1088/1742-6596/584/1/012027

来源: IOP

【 摘 要 】

Spatial distribution of the polarization in Rb vapor optically pumped with21Ne has been modeled numerically with 40 mW laser beam power, 180°C cell temperature, 1 bar cell pressure, and 6 mm × 15 mm pancake-cell geometry. An inhomogeneity of polarization throughout the cell results from a wall relaxation of polarized media and a decay of the pumping beam. For small cells characteristic of experimental conditions, a contribution of wall relaxation to the total alkali relaxation rate can become significant, demanding more accurate evaluation than afforded by analytical model based on average parameters.