We present measurments of optical trapping and cooling and magnetic trapping of ^39K in a double-MOT apparatus. (Optics Lett. 21, 290(1996)) We have measured light-assisted collisional loss rates from our second MOT over a range of trap light intensities. At an intensity of 10 mW/cm^2 we find a loss rate parameter \beta of 2 x 10^-11 cc/s. \beta increases with trap light intensity and is consistent with the values measured by Williamson and Walker (JOSA B 12, 1393 (1995)). We also present studies of the temperature of atoms in a MOT of ^39K. Under certain conditions of repump light intensity and trap light detuning we measure temperatures nearly as low as the Doppler Limit. Finally, we report on prelimiary results of magnetic trapping in which we have trapped several 10^7 atoms in a quadrupole magnetic trap.
Optical and Magnetic Trapping of Potassium 39 / Ensher, J.; Cornell, E. A.; Cataliotti, F.; Fort, C.; Marin, F.; Prevedelli, M.; Inguscio, M.; Ricci, L.; Tino, G. M.. - STAMPA. - (1998), pp. 62-62. (Intervento presentato al convegno 29th Annual Meeting of the APS Division of Atomic, Molecular, and Optical Physics tenutosi a Santa Fe, NM, USA nel 27-30 Maggio 1998).
Optical and Magnetic Trapping of Potassium 39
L. Ricci;
1998-01-01
Abstract
We present measurments of optical trapping and cooling and magnetic trapping of ^39K in a double-MOT apparatus. (Optics Lett. 21, 290(1996)) We have measured light-assisted collisional loss rates from our second MOT over a range of trap light intensities. At an intensity of 10 mW/cm^2 we find a loss rate parameter \beta of 2 x 10^-11 cc/s. \beta increases with trap light intensity and is consistent with the values measured by Williamson and Walker (JOSA B 12, 1393 (1995)). We also present studies of the temperature of atoms in a MOT of ^39K. Under certain conditions of repump light intensity and trap light detuning we measure temperatures nearly as low as the Doppler Limit. Finally, we report on prelimiary results of magnetic trapping in which we have trapped several 10^7 atoms in a quadrupole magnetic trap.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione
