arXiv subjects

Victor I. Romanenko

Publications and source records attributed to Victor I. Romanenko.

3 recordsLinked to original sources

arXiv2018

Spatial distribution of atoms in the field of the criss-cross standing bichromatic light waves

We show that properly detuning the carrier frequency of each of the criss-cross bichromatic waves from the transition frequency of the atom, it is possible to form a two-dimensional trap for atoms if the intensity of the waves is sufficiently large. For zero and near zero initial phases of waves, and also for $π$ and near $π$ phase shift between criss-cross waves a dynamic spatial structure of square cells with the side $λ/\sqrt{2}$ is formed. Numerical simulations are carried out for sodium atoms.

physics.atom-ph↗

arXiv2017

Trapping of Atoms by the Counter-Propagating Stochastic Light Waves

We calculate the temperature of the atoms in the field of counter-propagating stochastic light waves (the chaotic-field model). We show that the temperature of the atomic ensemble depends on the autocorrelation time of the waves, their intensity and the detuning of the carrier frequency of the waves from the atomic transition frequency. The field can form a one-dimensional trap for atoms, as is readily seen from our previous investigation of light-pressure force on an atom in counter-propagating stochastic light waves [V. I. Romanenko, B. W. Shore, L. P. Yatsenko, Opt. Commun. 268 (2006) 121-132]. We carry out a numerical simulation of the atomic ensemble using parameters appropriate for sodium atoms. Analyzing the known investigation of the light-pressure force on atoms and their motion in the counter-propagating polychromatic waves, we suggest an hypothesis that any polychromatic counter-propagating waves that have a discrete spectrum, or waves described by a stationary stochastic process, one of which repeats the other, can form a trap for atoms.

physics.atom-ph↗

arXiv2012

Capture of atoms and small particles in an optical trap formed by sequences of counter-propagating light pulses with a large area

A new trap for atoms and small particles based on the interaction between an atom and the field of counter-propagating light pulses that are partially superposed in time has been proposed. A substantial difference from the known analogs consists in that the atom-field interaction is close to the adiabatic one, which allows a considerably higher momentum to be transferred to the atom within the same time interval and makes the trap smaller in size. It has been shown that, owing to the dependence of the light pressure force on the atom velocity, the atomic ensemble is cooled at its interaction with the field.

physics.optics↗