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This article is cited in 8 scientific papers (total in 8 papers)
Laser cooling of atoms
Laser cooling limits in fields with a polarisation gradient of atoms with different recoil energies
A. A. Kirpichnikovaa, O. N. Prudnikovab, R. Ya. Il’enkovab, A. V. Taichenachevab, V. I. Yudinabc a Institute of Laser Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk
b Novosibirsk State University
c Novosibirsk State Technical University
Abstract:
Based on the numerical solution of the quantum kinetic equation for the atomic density matrix, which makes it possible to accurately take into account the recoil effects in the interaction of atoms with field photons, we have studied the limits of laser cooling of atoms using closed optical transitions characterised by different recoil parameters (the ratio of the recoil energy to the natural linewidth). It is shown that for optical transitions with an insufficiently small recoil parameter, the polarisation effects, which lead to the possibility of sub-Doppler laser cooling, lose their efficiency and do not ensure an attainment of the temperature below the Doppler limit. The analysis performed allows one to outline the boundaries of the sub-Doppler theory of laser cooling of atoms.
Keywords:
laser cooling of atoms, field polarisation, optical transitions, density matrix, recoil parameter.
Received: 22.07.2020 Revised: 03.08.2020
Citation:
A. A. Kirpichnikova, O. N. Prudnikov, R. Ya. Il’enkov, A. V. Taichenachev, V. I. Yudin, “Laser cooling limits in fields with a polarisation gradient of atoms with different recoil energies”, Kvantovaya Elektronika, 50:10 (2020), 939–946 [Quantum Electron., 50:10 (2020), 939–946]
Linking options:
https://www.mathnet.ru/eng/qe17339 https://www.mathnet.ru/eng/qe/v50/i10/p939
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