Proposal for an optical funnel trap
Anno: 1998
Autori: Morsch O., Meacher D.R.
Affiliazione autori: Univ Oxford, Clarendon Lab, Oxford OX1 3PU, England
Abstract: We propose an all-optical method for channelling and cooling a cloud of laser pre-cooled atoms making use of the light-shifts induced by a doughnut-mode laser beam tuned close to the high frequency side of an atomic resonance. We show that inelastic collisions of the atoms with the optical walls of the trap and optical pumping between differently light-shifted ground state hyperfine sublevels induced by a weak auxiliary repumping beam give rise to a cyclical mechanism which results in the simultaneous cooling and channelling of the atoms. Because the heating due to random scattering of photons is offset by this cooling mechanism, our trap does not suffer the lifetime limitation due to heating inherent to previous optical dipole traps. We present, for a variety of parameters, the results of semi-classical Monte Carlo simulations for a three-dimensional model system. (C) 1998 Elsevier Science B.V.
Giornale/Rivista: OPTICS COMMUNICATIONS (PRINT)
Volume: 148 (1-3) Da Pagina: 49 A: 53
Parole chiavi: Ultra-cold atomsDOI: 10.1016/S0030-4018(97)00680-9Citazioni: 22dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-05-12Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui