Spatial separation of Rb isotopes in a magneto-optical trap

노흥렬

Heung‐Ryoul Noh, J. O. Kim, D. S. Nam +1 more

We demonstrate simultaneous trapping and spatial separation of the two stable rubidium isotopes in a magneto-optical trap. To realize this novel type of isotope separation, we have built a compact diode laser which is frequency-stabilized by optical feedback from a diffraction grating, and frequency-modulated by a direct microwave modulation of the bias current from a yittrium iron garnet tuned oscillator. Use of the single diode laser with microwave sidebands provides much ease and flexibility in the applications of a magneto-optical trap.

Robert S. Williamson

Wenko Süptitz, G. Wokurka, Frank Strauch +2 more

Two different isotopes-(85)Rb and (87)Rb-have been captured simultaneously in one magneto-optical trap. The trap parameters could be chosen nearly independently for the two isotopes. The trap loss rates that are due to collisions between atoms of different isotopes have been measured in the low-intensity limit.

Chung-Yi Lin, C. R. Chen, Injae Yang +2 more

We experimentally demonstrate a novel scheme to simultaneously confine two atomic species of (87)Rb and (133)Cs with adjustable spatial separation by a controllable double-well magneto-optic trap. Using a single-loop wire and a magnetic bias field, the two clouds, each containing more than 1 x 10(6) atoms, are spatially separated above and below the wire center of the double-well MOT. The cloud interdistance can be controlled by independently varying the wire current and external bias field. This allows to load the double-well magnetic trap, and to study the dynamics of cold collisions between two-species atoms.

S. G. Crane, Ralf Guckert, Xinxin Zhao +5 more