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Your search keyword '"Bouloufa, N."' showing total 2 results
Start Over Author "Bouloufa, N." Topic cesium
2 results on '"Bouloufa, N."'

1. Optimal trapping wavelengths of Cs molecules in an optical lattice.

Author

Vexiau, R., Bouloufa, N., Aymar, M., Danzl, J., Mark, M., Nägerl, H., and Dulieu, O.

Subjects
*WAVELENGTHS, *CESIUM, *DIMERS, *OPTICAL lattices, *ELECTRIC fields, *DIPOLE moments, *LOW temperatures, *RESONANCE
Abstract

The present paper aims at finding optimal parameters for trapping of Cs molecules in optical lattices, with the perspective of creating a quantum degenerate gas of ground-state molecules. We have calculated dynamic polarizabilities of Cs molecules subject to an oscillating electric field, using accurate potential curves and electronic transition dipole moments. We show that for some particular wavelengths of the optical lattice, called 'magic wavelengths', the polarizability of the ground-state molecules is equal to the one of a Feshbach molecule. As the creation of the sample of ground-state molecules relies on an adiabatic population transfer from weakly-bound molecules created on a Feshbach resonance, such a coincidence ensures that both the initial and final states are favorably trapped by the lattice light, allowing optimized transfer in agreement with the experimental observation. [ABSTRACT FROM AUTHOR]

Published
2011
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2. Global analysis of data on the spin-orbit-coupled A ¹Σu+ and b ³∏u states of Cs2.

Author

Bai, Jianmei, Ahmed, E. H., Beser, B., Guan, Y., Kotochigova, S., Lyyra, A. M., Ashman, S., Wolfe, C. M., Huennekens, J., Feng Xie, Dan Li, Li Li, Tamanis, M., Ferber, R., Drozdova, A., Pazyuk, E., Stolyarov, A. V., Danzl, J. G., Nagerl, H.-C., and Bouloufa, N.

Subjects
*CESIUM, *DIMERS, *FOURIER transform spectroscopy, *SPECTRUM analysis, *POLARIZATION spectroscopy
Abstract

We present experimentally derived potential curves and spin-orbit interaction functions for the strongly perturbed A ¹Σu+ and b³Π, states of the cesium dimer. The results are based on data from several sources. Laser-induced fluorescence Fourier transform spectroscopy (LIF FTS) was used some time ago in the Laboratoire Aimé Cotton primarily to study the X ¹Σg+ state. More recent work at Tsinghua University provides information from moderate resolution spectroscopy on the lowest levels of the b ³Π±0u state as well as additional high-resolution data. From Innsbruck University, we have precision data obtained with cold Cs2 molecules. Recent data from Temple University was obtained using the optical-optical double resonance polarization spectroscopy technique, and finally, a group at the University of Latvia has added additional LIF FTS data. In the Hamiltonian matrix, we have used analytic potentials (the expanded Morse oscillator form) with both finite-difference (FD) coupled-channel and discrete variable representation (DVR) calculations of the term values. Fitted diagonal and off-diagonal spin-orbit functions are obtained and compared with ab initio results from Temple and Moscow State universities. [ABSTRACT FROM AUTHOR]

Published
2011
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