Studying the possibility of deep laser cooling of 24Mg atoms in an optical lattice: Two-level quantum model


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Abstract

The possible deep laser cooling of 24Mg atoms in a deep optical lattice in the presence of an additional pumping field resonant to the narrow 3s3s1S0 → 3s3p3P1 (λ = 457 nm) optical transition is studied. Two quantum models of the laser cooling of atoms in the optical trap are compared. One is based on the direct numerical solution to the kinetic quantum equation for an atomic density matrix; it considers both optical pumping and quantum recoil effects during interaction between the atoms and field photons. The second, simplified model is based on decomposing the states of the atoms over the levels of vibration in the optical trap and analyzing the evolution of these states. The comparison allows derivation of optical field parameters (pumping field intensity and detuning) that ensure cooling of the atoms to minimal energies. The conditions for fast laser cooling in an optical trap are found.

About the authors

O. N. Prudnikov

Laser Physics Institute, Siberian Branch; Novosibirsk State University

Author for correspondence.
Email: oleg.nsu@gmail.com
Russian Federation, Novosibirsk, 630090; Novosibirsk, 630090

A. V. Taichenachev

Laser Physics Institute, Siberian Branch; Novosibirsk State University

Email: oleg.nsu@gmail.com
Russian Federation, Novosibirsk, 630090; Novosibirsk, 630090

V. I. Yudin

Laser Physics Institute, Siberian Branch; Novosibirsk State University

Email: oleg.nsu@gmail.com
Russian Federation, Novosibirsk, 630090; Novosibirsk, 630090

E. M. Rasel

Institut für Quantenoptik

Email: oleg.nsu@gmail.com
Germany, Hannover, D-30167

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