arXiv:1412.3516 · Physical Review A

Alignment dynamics of slow light diffusion in ultracold atomic Rb85

Salim Balik, R. G. Olave, Charles I. Sukenik, Mark D. Havey, V. M. Datsyuk, Igor M. Sokolov, Dmitriy V. Kupriyanov

Published Nov 3, 2005• 17 citations

Abstract

A combined experimental and theoretical investigation of time- and alignment-dependent propagation of light in an ultracold atomic gas of atomic $^{85}\mathrm{Rb}$ is reported. Coherences among the scattering amplitudes for light scattering off excited hyperfine levels produce strong variations of the light polarization in the vicinity of atomic resonance. Measurements are in excellent agreement with Monte Carlo simulations of the multiple scattering process.

DOI: 10.1103/physreva.72.051402

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arXiv:1412.3516 · Physical Review A

Alignment dynamics of slow light diffusion in ultracold atomic Rb85

Salim Balik, R. G. Olave, Charles I. Sukenik, Mark D. Havey, V. M. Datsyuk, Igor M. Sokolov, Dmitriy V. Kupriyanov

Published Nov 3, 2005• 17 citations

arXiv HTML PDF

Abstract

A combined experimental and theoretical investigation of time- and alignment-dependent propagation of light in an ultracold atomic gas of atomic

^{85}\mathrm{Rb}

is reported. Coherences among the scattering amplitudes for light scattering off excited hyperfine levels produce strong variations of the light polarization in the vicinity of atomic resonance. Measurements are in excellent agreement with Monte Carlo simulations of the multiple scattering process.

DOI: 10.1103/physreva.72.051402

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Alignment Dynamics of Slow Light Diffusion in Ultracold Atomic 85Rb

Salim Balik, R. G. Olave, Charles I. Sukenik +4 more

Frontiers in OpticsJan 1, 20052 citations

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S. Balik, R. Olave, Charles I. Sukenik +4 more

We report a combined experimental and theoretical simulation of multiply scattered light dynamics in an ultracold gas of 85Rb atoms. Measurements of the spectral dependence of the time-decay of the scattered light intensity, following pulsed excitation with near resonance radiation, reveals that the decay for long times is nearly exponential, with a decay constant that is largely independent of detuning from resonance. Monte Carlo simulations of the multiple scattering process show that, for large detunings, near resonance scattering of Fourier components of the excitation pulse plays a significant role in the effect. This interpretation is supported by the observations, and successful modelling, of beating between Rayleigh scattered light at the excitation carrier frequency with the Fourier components of the excitation pulse that overlap significantly with the atomic resonance.We report a combined experimental and theoretical simulation of multiply scattered light dynamics in an ultracold gas of 85Rb atoms. Measurements of the spectral dependence of the time-decay of the scattered light intensity, following pulsed excitation with near resonance radiation, reveals that the decay for long times is nearly exponential, with a decay constant that is largely independent of detuning from resonance. Monte Carlo simulations of the multiple scattering process show that, for large detunings, near resonance scattering of Fourier components of the excitation pulse plays a significant role in the effect. This interpretation is supported by the observations, and successful modelling, of beating between Rayleigh scattered light at the excitation carrier frequency with the Fourier components of the excitation pulse that overlap significantly with the atomic resonance.

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Physical Review AJan 30, 200353 citations

A combined experimental and theoretical investigation of time- and alignment-dependent propagation of light in an ultracold atomic gas of atomic

^{85}\mathrm{Rb}

We report an experimental study of correlated multiple light scattering in an ultracold gas of

{}^{85}\mathrm{Rb}

confined in a magneto-optic trap. Measurements are made of the polarization dependence of the spatial and spectral profile of light backscattered from the sample. The results show an interferometric enhancement sensitive to coherent multiple scattering in the atomic gas, and strong variations with the polarization of the incident and detected light. The spatial width and peak value of the enhancement are found to be dependent on the sample size. Comparison of all the measurements with realistic quantum Monte Carlo simulations yields a very good agreement.

We report a combined experimental and theoretical investigation of near-resonance light scattering from a high-density and ultracold atomic

{}^{87}

Rb gas. The atomic sample, having a peak density $\ensuremath{\sim}$$5\ifmmode\times\else\texttimes\fi{}{10}^{13}$ atoms/cm

{}^{3}

, temperature $\ensuremath{\sim}$65 $\ensuremath{\mu}$K, and initially prepared in the

F=1

lower-energy

{}^{87}

Rb hyperfine component, is optically pumped to the higher-energy

F=2

hyperfine level. Measurements are made of the transient hyperfine pumping process and of the time evolution of scattering of near-resonance probe radiation on the $F=2\ensuremath{\rightarrow}{F}^{\ensuremath{'}}=3$ transition. Features of the density, detuning, and temporal dependence of the signals are attributed to the high density and consequent large optical depth of the samples.

{}^{85}\mathrm{Rb}.

Comprehensive Monte Carlo simulations of the spatial, spectral, and polarization dependence of the backscattering line shape are made and compared with available experimental results.