Frontiers in Optics

Alignment Dynamics of Slow Light Diffusion in Ultracold Atomic 85Rb

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

Published Jan 1, 2005• 2 citations

Abstract

We report experimental and theoretical study of time-and polarization-dependent propagation of light in ultracold atomic Rb. Strong variations of the time-dependent electronic alignment in the vicinity of atomic resonance is measured.

DOI: 10.1364/fio.2005.jwa87

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Frontiers in Optics

Alignment Dynamics of Slow Light Diffusion in Ultracold Atomic 85Rb

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

Published Jan 1, 2005• 2 citations

Publisher

Abstract

DOI: 10.1364/fio.2005.jwa87

Related papers

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

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.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.

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Strong-field coherent backscattering of light in ultracold atomic 85Rb

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We report experimental observations of polarization-dependent coherence loss occurring in strong-field multiple scattering of light in ultracold atomic 85Rb. A measure of coherence in multiple light scattering is the degree of contrast of the coherent backscattering enhancement from the vapour. For resonance saturation parameters up to 9, we see light-polarization-dependent modification of the backscattering enhancement, suggesting that inelastic atomic light scattering and dynamic atomic magnetization may play important roles in the multiple scattering process for 85Rb.We report experimental observations of polarization-dependent coherence loss occurring in strong-field multiple scattering of light in ultracold atomic 85Rb. A measure of coherence in multiple light scattering is the degree of contrast of the coherent backscattering enhancement from the vapour. For resonance saturation parameters up to 9, we see light-polarization-dependent modification of the backscattering enhancement, suggesting that inelastic atomic light scattering and dynamic atomic magnetization may play important roles in the multiple scattering process for 85Rb.

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Polarization self-rotation in ultracold atomic Rb87

Travis Horrom, Salim Balik, A. Lezama +2 more

We report on a combined experimental and theoretical study of polarization self-rotation in an ultracold atomic sample. In the experiments, a probe laser is tuned in the spectral vicinity of the ${D}_{1}$ line to observe polarization self-rotation in a sample of ultracold $^{87}\mathrm{Rb}$ prepared in a magneto-optical trap (MOT). Systematic measurements of the rotation angle of the light-polarization ellipse as a function of laser intensity, initial ellipticity, and detuning are made. The observations, in good agreement with theoretical simulations, are indicative of the presence of a residual static magnetic field, resulting in measured asymmetries in the rotation angle for right and left ellipticities. In this paper we present our detailed experimental results and analysis of the combined influences of polarization self-rotation and the Faraday effect.We report on a combined experimental and theoretical study of polarization self-rotation in an ultracold atomic sample. In the experiments, a probe laser is tuned in the spectral vicinity of the ${D}_{1}$ line to observe polarization self-rotation in a sample of ultracold $^{87}\mathrm{Rb}$ prepared in a magneto-optical trap (MOT). Systematic measurements of the rotation angle of the light-polarization ellipse as a function of laser intensity, initial ellipticity, and detuning are made. The observations, in good agreement with theoretical simulations, are indicative of the presence of a residual static magnetic field, resulting in measured asymmetries in the rotation angle for right and left ellipticities. In this paper we present our detailed experimental results and analysis of the combined influences of polarization self-rotation and the Faraday effect.

arXiv:1102.4041Physical Review AMay 31, 201117 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}

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.

Probing the alignment of ultracold spin-polarized

\textrm{Rb}_2

molecules

We demonstrate a method to probe the alignment of the molecular axis of spin-polarized ultracold dimers. Diatomic

^{87}

_2

molecules are held in the lowest Bloch band of a far-off resonance 3D optical lattice. Using lattice modulation spectroscopy we measure the molecular polarizabilities, which are directly linked to the alignment, along each of the

x

y

-, and

z

-directions of the lab coordinate system. In contrast to nonrotating molecules, we observe that rotating molecules have an anisotropic orientation of the molecular axis. Furthermore, we derive the dynamical polarizabilities for a laser wavelength of 1064.5 nm parallel and orthogonal to the molecular axis of the dimer,

\alpha_\parallel=(8.9 \pm 0.9)\times10^3\:\textrm{a.u.}

and

\alpha_\perp=(0.9 \pm 0.4)\times10^3\:\textrm{a.u.}

, respectively.

We report on a combined experimental and theoretical study of polarization self-rotation in an ultracold atomic sample. In the experiments, a probe laser is tuned in the spectral vicinity of the

{D}_{1}

line to observe polarization self-rotation in a sample of ultracold

^{87}\mathrm{Rb}

prepared in a magneto-optical trap (MOT). Systematic measurements of the rotation angle of the light-polarization ellipse as a function of laser intensity, initial ellipticity, and detuning are made. The observations, in good agreement with theoretical simulations, are indicative of the presence of a residual static magnetic field, resulting in measured asymmetries in the rotation angle for right and left ellipticities. In this paper we present our detailed experimental results and analysis of the combined influences of polarization self-rotation and the Faraday effect.