Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Near-Recoil-Limited Temperatures Obtained by Laser Trapping on the Narrow 1So - 3P1 Intercombination Transition of Neutral Strontium

Published

Author(s)

K R. Vogel, Tim P. Dinneen, Alan Gallagher, J L. Hall

Abstract

About 2 x 107 neutral strontium atoms have been loaded into a magneto-optical trap (MOT) that uses the narrow (7 kHz) intercombinationline at 689 nm as the cycling transition. The atoms are second-stage laser cooled to - 10 {difference} 10 K from an initial 5 mK atomic sample ({difference} 5 x 107 atoms), generated in a vapor cell MOT that employs the strong (32 MHz) cycling transition at 461 nm. To demonstrate the low temperatures of these atoms, optical Ramsey spectroscopy is performed upon the 1So -3P1 transition using only two excitation pulses; the velocity dependence of the fringe contrast indicates an rms velocity of 3cm/s for the 689 nm MOT-cooled sample.
Proceedings Title
International Frequency Control Symposium | 53th | Proceedings of the 1999 IEEE/EIA International Frequency Control Symposium and Exhibition | IEEE
Conference Dates
April 1, 1999
Conference Location
Besancon, FR
Conference Title
IEEE International Frequency Control Symposium

Keywords

frequency metrology, laser cooling, laser trapping, strontium

Citation

Vogel, K. , Dinneen, T. , Gallagher, A. and Hall, J. (1999), Near-Recoil-Limited Temperatures Obtained by Laser Trapping on the Narrow <sup>1</sup>S<sub>o</sub> - <sup>3</sup>P<sub>1</sub> Intercombination Transition of Neutral Strontium, International Frequency Control Symposium | 53th | Proceedings of the 1999 IEEE/EIA International Frequency Control Symposium and Exhibition | IEEE, Besancon, FR (Accessed July 20, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created April 1, 1999, Updated February 17, 2017