Influence of spontaneous emission transfer on the resonances of interaction of laser radiation with alkali atoms confined in an extremely thin cell

23rd International Conference on Spectral Line Shapes

Todorov, G.^1 ; Polischuk, V.^2 ; Krasteva, A.^1 ; Sargsyan, A.^3 ; Cartaleva, S.^1 ; Vartanyan, T.^2

Institute of Electronics, Bulgarian Academy of Sciences, 72, Sofia

1784, Bulgaria^1

ITMO University, St. Petersburg

197101, Russia^2

Institute for Physical Research, National Academy of Sciences of Armenia, Ashtarak-2, Armenia^3

关键词: Alkali atoms;    Extremely thin cells;    Laser light illumination;    Nonlinear absorptions;    Perturbation theory;    Spontaneous decay;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/810/1/012040/pdf
DOI  :  10.1088/1742-6596/810/1/012040

来源: IOP

【 摘 要 】

The nonlinear absorption and fluorescence spectra of133Cs vapours confined to the extremely thin cell are computed in the framework of perturbation theory regarding to the intensity of the laser light illumination. The amplitude as well as the sign of the longitudinal alignment of the ground state is shown to be defined by the spontaneous decay of the upper level. The sign and the magnitude of the nonlinear absorption resonance on the closed optical transition are shown to be defined by this process as well.