Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE

Light pressure exerted on atoms in stochastic laser fields

V. I. Romanenko, Леонід Петрович Яценко

Published May 2, 2006• 0 citations
Publisher

Abstract

We present both analytical results and numerical simulations that describe the light pressure on atoms in the fields of counterpropagating waves whose amplitudes and phases are described as stochastic processes. We show that, just as with the light pressure exerted in the field of two counterpropagating bichromatic waves, the light pressure on an atom in counterpropagating stochastic waves may considerably exceed the pressure exerted in the field of a single running wave, when one of them repeats the other with some delay, We also discuss the interaction of an atom with two counterpropagating waves when one of them is monochromatic and the other one has a stochastic phase.

DOI
10.1117/12.682580

Related papers

Optical pressure on atoms in a field of counterpropagating amplitude- and frequency-modulated waves which are in resonance with an atomic transition

V. S. Voǐtsekhovich, M. V. Danileǐko, Анатолій Михайлович Негрійко +2 more

A theoretical investigation is made of the force acting on a two-level atom under conditions of saturation in the field of counterpropagating amplitude- and frequency-modulated waves of different intensities, which are in resonance with an atomic transition. It is shown that the resultant induced optical pressure (due to preferential absorption of light of one of the waves and subsequent stimulated emission in the form of the other wave) depends linearly on the correlation function of the amplitude of the field of one of the waves and on the rate of change of the amplitude of the other wave, and also on the correlation function of the phase of one of the waves and the rate of change of the phase of the other wave at the point where the atom is located.

Soviet Journal of Quantum Electronics•Sep 30, 1991•1 citation

Atomic Momentum Diffusion in the Field of Counter-Propagating Stochastic Light Waves

V. I. Romanenko, O. G. Udovytska, V. M. Khodakovskii +1 more

The momentum diffusion of atoms in the field of two counter-propagating stochastic waves, one of which reproduces the other one with a certain time delay, has been studied. It is shown that the parameters of atom-field interaction, at which the light pressure force is maximum, correspond to the increasing momentum diffusion coefficient. In the case of high-intensity field described by the stochastic field model, the momentum diffusion coefficient was found to be proportional to the square root of the field autocorrelation time. The wave function describing the inner state of atoms is modeled, by using the Monte-Carlo method. Numerical calculations are carried out for cesium atoms.

Ukrainian Journal of Physics•Aug 2, 2018•2 citations

Stimulated light pressure on atoms and molecules in amplitude modulated counterpropagating waves

V. S. Voǐtsekhovich, M. V. Danileǐko, Анатолій Михайлович Негрійко +2 more

The light pressure that results from the transfer of a momentum hk/2π to an atomic particle in the resonant scattering of photons has been studied thoroughly and is widely used to control the motion of atoms, to reduce their kinetic energy, corresponding to temperatures in the range below 1 mK and to reach in future the ultimate frequency standard. For a traveling plane wave the momentum of an atom can be changed significantly only if the interaction of the atom with a laser field can be made cyclic. This is possible if there is a transition from a ground (or metastable) state to a short lived level that decays spontaneously to the lower state. For this case the maximum force is determined by the rate 2γ of the spontaneous decay and is given by Fmax = hkγ/ 2π.

•May 8, 1994•2 citations

Scattering, velocity bunching, and self-localization of atoms in a light field

A. P. Kazantsev, Lev Davidovič Landau, Gregory I. Surdutovich +2 more

Coherent and incoherent manifestations of light-pressure effects are considered. A simple analytical solution of the quantum problem of atomic scattering in a standing-wave field for arbitrarily large numbers of spontaneous transitions is obtained. Attractors of the light-pressure force in a strong field, i.e., the critical velocities at which a bunching of the particles takes place, are found. The one-dimensional problem of self-localization of an atomic ensemble in the field of counterpropagating waves is treated for a gas with an arbitrary optical thickness.

Journal of the Optical Society of America B•Nov 1, 1989•10 citations

Two-level atoms moving in strong biharmonic and monochromatic counterpropagating fields

S. A. Pulkin, Tai Hyun Yoon, A. I. Kuz’min +1 more

The polarization and power spectra of radiation of two-level atoms moving in a field of biharmonic and monochromatic counterpropagating waves are computer simulated. It is shown that, as the frequencies of the counterpropagating waves are scanned with respect to the central frequency of the Doppler contour in the intensity distribution of groups of atoms moving at velocities that satisfy the resonance conditions for multiphoton transitions between quasi-energy levels, apart from well-known sub-Doppler resonances, narrow peaks appear. Such resonances should also occur for the stimulated light pressure force.

Optics and Spectroscopy•Aug 1, 2008•5 citations

Evolution of the velocity distribution of atoms under the action of the bichromatic force

V. I. Romanenko, Леонід Петрович Яценко

We study numerically the evolution of the velocity distribution of atoms under the action of the bichromatic force. The comparison of the time dependencies of the distribution width and the average acceleration of atoms reveals the correlation of these quantities. We show that the estimation of the momentum diffusion coefficient on the basis of the analogy between the interaction of atoms with the counterpropagating bichromatic waves and the interaction of atoms with the counterpropagating sequences of the $\ensuremath{\pi}$ pulses roughly corresponds to the results of numerical calculations. To separate the influence of the momentum diffusion on the evolution of atomic momentum distribution from the influence of the time-dependent Doppler shift, we study the motion of a ``heavy'' atom, for which the velocity change during the interaction of an atom with the field can be neglected. Provided that the parameters of the atom-field interaction are optimal, we show that the momentum diffusion coefficient is proportional to the intensity of the laser radiation. We used the Monte Carlo wave-function method for the numerical simulation of the atomic motion.

arXiv:2011.11312•Physical Review A•Apr 9, 2021•3 citations
We present both analytical results and numerical simulations that describe the light pressure on atoms in the fields of counterpropagating waves whose amplitudes and phases are described as stochastic processes. We show that, just as with the light pressure exerted in the field of two counterpropagating bichromatic waves, the light pressure on an atom in counterpropagating stochastic waves may considerably exceed the pressure exerted in the field of a single running wave, when one of them repeats the other with some delay, We also discuss the interaction of an atom with two counterpropagating waves when one of them is monochromatic and the other one has a stochastic phase.
A theoretical investigation is made of the force acting on a two-level atom under conditions of saturation in the field of counterpropagating amplitude- and frequency-modulated waves of different intensities, which are in resonance with an atomic transition. It is shown that the resultant induced optical pressure (due to preferential absorption of light of one of the waves and subsequent stimulated emission in the form of the other wave) depends linearly on the correlation function of the amplitude of the field of one of the waves and on the rate of change of the amplitude of the other wave, and also on the correlation function of the phase of one of the waves and the rate of change of the phase of the other wave at the point where the atom is located.
The momentum diffusion of atoms in the field of two counter-propagating stochastic waves, one of which reproduces the other one with a certain time delay, has been studied. It is shown that the parameters of atom-field interaction, at which the light pressure force is maximum, correspond to the increasing momentum diffusion coefficient. In the case of high-intensity field described by the stochastic field model, the momentum diffusion coefficient was found to be proportional to the square root of the field autocorrelation time. The wave function describing the inner state of atoms is modeled, by using the Monte-Carlo method. Numerical calculations are carried out for cesium atoms.
The light pressure that results from the transfer of a momentum hk/2π to an atomic particle in the resonant scattering of photons has been studied thoroughly and is widely used to control the motion of atoms, to reduce their kinetic energy, corresponding to temperatures in the range below 1 mK and to reach in future the ultimate frequency standard. For a traveling plane wave the momentum of an atom can be changed significantly only if the interaction of the atom with a laser field can be made cyclic. This is possible if there is a transition from a ground (or metastable) state to a short lived level that decays spontaneously to the lower state. For this case the maximum force is determined by the rate 2γ of the spontaneous decay and is given by Fmax = hkγ/ 2π.
Coherent and incoherent manifestations of light-pressure effects are considered. A simple analytical solution of the quantum problem of atomic scattering in a standing-wave field for arbitrarily large numbers of spontaneous transitions is obtained. Attractors of the light-pressure force in a strong field, i.e., the critical velocities at which a bunching of the particles takes place, are found. The one-dimensional problem of self-localization of an atomic ensemble in the field of counterpropagating waves is treated for a gas with an arbitrary optical thickness.
The polarization and power spectra of radiation of two-level atoms moving in a field of biharmonic and monochromatic counterpropagating waves are computer simulated. It is shown that, as the frequencies of the counterpropagating waves are scanned with respect to the central frequency of the Doppler contour in the intensity distribution of groups of atoms moving at velocities that satisfy the resonance conditions for multiphoton transitions between quasi-energy levels, apart from well-known sub-Doppler resonances, narrow peaks appear. Such resonances should also occur for the stimulated light pressure force.
We study numerically the evolution of the velocity distribution of atoms under the action of the bichromatic force. The comparison of the time dependencies of the distribution width and the average acceleration of atoms reveals the correlation of these quantities. We show that the estimation of the momentum diffusion coefficient on the basis of the analogy between the interaction of atoms with the counterpropagating bichromatic waves and the interaction of atoms with the counterpropagating sequences of the $\ensuremath{\pi}$ pulses roughly corresponds to the results of numerical calculations. To separate the influence of the momentum diffusion on the evolution of atomic momentum distribution from the influence of the time-dependent Doppler shift, we study the motion of a ``heavy'' atom, for which the velocity change during the interaction of an atom with the field can be neglected. Provided that the parameters of the atom-field interaction are optimal, we show that the momentum diffusion coefficient is proportional to the intensity of the laser radiation. We used the Monte Carlo wave-function method for the numerical simulation of the atomic motion.