This article is cited in 3 papers

Spectroscopy and physics of atoms and molecules

Dynamics of spectral composition of fluorescence of cold atoms in external electric and magnetic fields

S. V. Bodjokin, I. M. Sokolov

Peter the Great St. Petersburg Polytechnic University, St. Petersburg, 195251, Russia

Abstract: A consistent quantum-mechanical approach is used to calculate a fluorescence signal from a cold atomic ensemble excited by pulsed radiation and exposed to a DC electric or magnetic field. The short time Fourier transform is used to analyze the spectral composition of this signal and to investigate its changes over time after the end of excitation. It is demonstrated that external fields substantially change both the shape of the spectrum and its dynamics. The discovered effects are explained as being the result of action of these fields on the spectrum of states of the two-atomic quasi-molecular clusters that randomly form in disordered ensembles.

Received: 23.04.2018

DOI: 10.21883/OS.2018.09.46542.114-18

 English version: Optics and Spectroscopy, 2018, 125:3, 317–323

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