Abstract

A single Sr⁺ atom was confined in a radio-frequency quadrupole trap and laser cooled with resonant laser light. Examination of the transition Doppler profile indicated an ion kinetic temperature of less than 500 mK. Quantum jumps into and out of the metastable 4d ²D_5/2 level were observed by laser excitation on the electric-quadrupole-allowed transition from the ground state at 674 nm. The dark and bright periods in the strong fluorescence showed variations owing to the applied driving field on the electric-quadrupole transition. These results provide an improved determination of τ = 372 ± 25 msec for the natural metastable-state lifetime.

© 1990 Optical Society of America

Observation of the 5s²S_1/2−4d²D_5/2 transition in a single laser-cooled trapped Sr⁺ ion by using an all-solid-state system of lasers

G. P. Barwood, C. S. Edwards, P. Gill, H. A. Klein, and W. R. C. Rowley
Opt. Lett. 18(9) 732-734 (1993)

Laser cooling of trapped Ca⁺ and measurement of the 3 ²D_5/2 state lifetime

Shinji Urabe, Masayoshi Watanabe, Hidetsuka Imajo, and Kazuhiro Hayasaka
Opt. Lett. 17(16) 1140-1142 (1992)

Sideband-resolved spectroscopy on the 4 ²S_1/2–3 ²D_5/2 transition in single calcium ions by use of fundamental waves of diode lasers

Kenji Toyoda, Hideyuki Naka, Hidenori Kitamura, Hideyuki Sawamura, and Shinji Urabe
Opt. Lett. 29(11) 1270-1272 (2004)

Two-photon spectroscopy of the 6S_1/2 → 6D_5/2 transition of trapped atomic cesium

N. Ph. Georgiades, E. S. Polzik, and H. J. Kimble
Opt. Lett. 19(18) 1474-1476 (1994)

Measurement of the calcium ¹P₁–¹D₂ transition rate in a laser-cooled atomic beam

N. Beverini, F. Giammanco, E. Maccioni, F. Strumia, and G. Vissani
J. Opt. Soc. Am. B 6(11) 2188-2193 (1989)