Laser cooling transitions in atomic erbium

Laser cooling transitions in atomic erbium.

We discuss laser cooling opportunities in atomic erbium, identifying five J ? J + 1 transitions from the 4f126s2 3H6 ground state that are accessible to common visible and near-infrared continuous-wave tunable lasers. We present lifetime measurements for the 4f11(4Io 15/2)5d5/26s2 (15/2, 5/2)7o state at 11888 cm-1 and the 4f11(4Io 13/2)5d3/26s2 (13/2, 5/2)7o state at 15847 cm-1, showing values ...

Interferometric Laser Cooling of Atomic Rubidium.

We report the 1D cooling of ^{85}Rb atoms using a velocity-dependent optical force based upon Ramsey matter-wave interferometry. Using stimulated Raman transitions between ground hyperfine states, 12 cycles of the interferometer sequence cool a freely moving atom cloud from 21 to 3 μK. This pulsed analog of continuous-wave Doppler cooling is effective at temperatures down to the recoil limit; w...

Transverse laser cooling of a velocity-selected sodium atomic beam

The transverse velocity distribution of a sodium atomic beam, laser cooled in one dimension, has been measured with sub-recoil resolution. A velocity-selective detection system was employed to separate the longitudinal and transverse velocity components to provide a direct measure of the transverse velocity distribution. The effects of varying the cooling laser intensity and detuning on the der...

Candidates for Laser Cooling of Atomic Anions: La- versus Os-

This brief report is a followup to the recent proposal of using La− as another candidate, in addition to Os−, in laser cooling of anions, which can then be used to cool sympathetically antiprotons. Using the relativistic configuration interaction (RCI) formalism, we calculate the photodetachment cross sections of the upper laser cooling state La− 5d6s6p D1 and Os− 5d6s6p D9/2. Our results show ...

Simplest Atomic System for Sub-Doppler Laser Cooling