TWO-TEMPERATURE DISTRIBUTION OF ATOMS UNDER SUB-DOPPLER COOLING CONDITIONS
- Authors: Kirpichnikova A.A1, Il'enkov R.Y.1, Prudnikov O.N1
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Affiliations:
- Institute of Laser Physics, Siberian Branch of the Russian Academy of Sciences
- Issue: Vol 166, No 4 (2024)
- Pages: 517-526
- Section: Articles
- URL: https://journals.rcsi.science/0044-4510/article/view/268178
- DOI: https://doi.org/10.31857/S0044451024100080
- ID: 268178
Cite item
Abstract
The problem of sub-Doppler laser cooling of atoms under "optical molasses" conditions in fields formed by counter-propagating waves with different polarization configurations is considered, with full accounting for quantum recoil effects. It is shown that the distribution of cold atoms is not in equilibrium but can nevertheless be approximated by two Gaussian functions and, accordingly, characterized by temperatures of "cold" and "hot" fractions. A detailed analysis of the atomic fractions and their temperatures depending on the parameters of light fields is carried out. Based on the obtained results, the concept of weighted average temperature can be introduced, which corresponds to the average kinetic energy of atoms.
About the authors
A. A Kirpichnikova
Institute of Laser Physics, Siberian Branch of the Russian Academy of Sciences
Email: oleg.nsu@gmail.com
Russian Federation, 630090, Novosibirsk
R. Ya Il'enkov
Institute of Laser Physics, Siberian Branch of the Russian Academy of Sciences
Email: oleg.nsu@gmail.com
Russian Federation, 630090, Novosibirsk
O. N Prudnikov
Institute of Laser Physics, Siberian Branch of the Russian Academy of Sciences
Author for correspondence.
Email: oleg.nsu@gmail.com
Russian Federation, 630090, Novosibirsk
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