Detection by two-photon ionization and magnetic trapping of cold Rb2 triplet state molecules

Lozeille, Jérôme; Fioretti, A.; Gabbanini, C.; Huang, Yanyan; Pechkis, Hyewon; Wang, D.; Gould, P. L.; Eyler, E. E.; Stwalley, William C.; Aymar, M; Dulieu, Olivier

doi:10.1140/epjd/e2006-00084-4

Cited by 57 publications

(84 citation statements)

References 21 publications

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“…However, the amplitude of the present functions is about 2.3-3.0 times higher then preceding ones. The present SO matrix elements between the 2 3 Π g and 2 3 Σ + g , 3 1 Σ + g , 1 3 ∆ g states of the Rb 2 converging to the 5 2 S+4 2 D dissociation limit (figure 4a) are in moderate agreement with their effective (semi-empirical) counterparts [9] (see large open symbols on the figure 4a). The latter values were obtained assuming their independence of R by the adjustment of the ab initio potential curves to reproduce resonance-enhanced two-photon ionization of ultracold rubidium molecule.…”

Section: The Spin-orbit Coupling Matrix Elementssupporting

confidence: 73%

“…The ground and excited electronic states of rubidium and cesium dimers were a subject of many theoretical studies mainly focusing on the adiabatic potential energy curves [7,8,9,10,11,12,13,14,15,16,17,18,19] (PECs) as well as electric dipole transition moments (EDTMs) calculations [9,17]. The SO matrix elements of Rb 2 have been obtained explicitly in Ref.…”

Section: Introductionmentioning

confidence: 99%

“…The solid symbols -present work, open symbols -empirical and semi-empirical data borrowed from Refs [9,40,42]…”

mentioning

confidence: 99%

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Theoretical study of spin–orbit and Coriolis coupling among the low-lying states of Rb2 and Cs2

2015

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Section: The Spin-orbit Coupling Matrix Elementssupporting

confidence: 73%

Section: Introductionmentioning

confidence: 99%

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Theoretical study of spin–orbit and Coriolis coupling among the low-lying states of Rb2 and Cs2

2015

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“…In both cases, V g corresponds to the lowest triplet state, a 3 + u (5s + 5s). The potentials at short range are given in [31] and [32]. They are connected to analytical long-range dispersion potentials C 3 /R 3 + C 6 /R 6 + C 8 /R 8 with coefficients taken from [33] and [34].…”

Section: A Excitation By a Pump Pulse And Dynamicsmentioning

confidence: 99%

Correlation dynamics after short-pulse photoassociation

Koch

Kosloff

2010

Phys. Rev. A

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Two atoms in an ultracold gas are correlated at short inter-atomic distances due to threshold effects where the potential energy of their interaction dominates the kinetic energy. The correlations manifest themselves in a distinct nodal structure of the density matrix at short inter-atomic distances. Pump-probe spectroscopy has recently been suggested [Phys. Rev. Lett. 103, 260401 (2009)] to probe these pair correlations: A suitably chosen, short photoassociation laser pulse depletes the ground state pair density within the photoassociation window, creating a non-stationary wave packet in the electronic ground state. The dynamics of this non-stationary wave packet is monitored by time-delayed probe and ionization pulses. Here, we discuss how the choice of the pulse parameters affects experimental feasibility of this pump-probe spectroscopy of two-body correlations

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“…As the 5s+5p molecules are loosely bound and of long range character, ground state molecules can also be expected to populate the uppermost vibrational states in the ground state potential. In cw-photoassociation experiments [35,42] this process is well known and the major formation process of ultracold molecules in their electronic ground state. In our experiments, ground state molecules are detected by excitation to an intermediate state below the 5s+4d or 5s+6s asymptotes by a probe-pulse and subsequently ionized by a pump-pulse.…”

Section: Signal At Negative Delaysmentioning

confidence: 99%

Photoassociation and coherent transient dynamics in the interaction of ultracold rubidium atoms with shaped femtosecond pulses. I. Experiment

et al. 2009

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We experimentally investigate various processes present in the photoassociative interaction of an ultracold atomic sample with shaped femtosecond laser pulses. We demonstrate the photoassociation of pairs of rubidium atoms into electronically excited, bound molecular states using spectrally cut femtosecond laser pulses tuned below the rubidium D1 or D2 asymptote. Time-resolved pumpprobe spectra reveal coherent oscillations of the molecular formation rate, which are due to coherent transient dynamics in the electronic excitation. The oscillation frequency corresponds to the detuning of the spectral cut position to the asymptotic transition frequency of the rubidium D1 or D2 lines, respectively. Measurements of the molecular photoassociation signal as a function of the pulse energy reveal a non-linear dependence and indicate a non-perturbative excitation process. Chirping the association laser pulse allowed us to change the phase of the coherent transients. Furthermore, a signature for molecules in the electronic ground state is found, which is attributed to molecule formation by femtosecond photoassociation followed by spontaneous decay. In a subsequent article [A. Merli et al., submitted] quantum mechanical calculations are presented, which compare well with the experimental data and reveal further details about the observed coherent transient dynamics.

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Detection by two-photon ionization and magnetic trapping of cold Rb2 triplet state molecules

Cited by 57 publications

References 21 publications

Theoretical study of spin–orbit and Coriolis coupling among the low-lying states of Rb2 and Cs2

Theoretical study of spin–orbit and Coriolis coupling among the low-lying states of Rb2 and Cs2

Correlation dynamics after short-pulse photoassociation

Photoassociation and coherent transient dynamics in the interaction of ultracold rubidium atoms with shaped femtosecond pulses. I. Experiment

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