LASER COOLING OF A SINGLE CA- OBSERVATION OF QUANTUM JUMPS( ION )

Authors
URABE S HAYASAKA K WATANABE M IMAJO H OHMUKAI R HAYASHI R
Citation
S. Urabe et al., LASER COOLING OF A SINGLE CA- OBSERVATION OF QUANTUM JUMPS( ION ), Applied physics. B, Photophysics and laser chemistry, 57(5), 1993, pp. 367-371
Citations number
15
Categorie Soggetti
Physics, Applied
Journal title
Applied physics. B, Photophysics and laser chemistry → ACNP
ISSN journal
07217269
Volume
57
Issue
5
Year of publication
1993
Pages
367 - 371
Database
ISI
SICI code
0721-7269(1993)57:5<367:LCOASC>2.0.ZU;2-9
Abstract
This paper describes trapping and laser cooling of a Ca+ ion in an rf quadrupole ion trap. A single Ca+ ion is laser cooled to below 130 mK and quantum jumps are observed by exciting the ion into the metastable D5/2 state via the P3/2 state. The lifetime of the metastable D5/2 st ate is estimated from the distribution of the dark periods of the quan tum-jump signal. Collision-induced jumps between the metastable D3/2 s tate and the D5/2 state in a background gas are also directly observed .