By Topic

Development of optical frequency standards based upon the 2 S1/2-2D5/2 transition in 88 Sr+ and 87Sr+

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)
Barwood, G. ; Nat. Phys. Lab., Teddington, UK ; Kelin Gao ; Gill, P. ; Huang, G.
more authors

Recent work is presented on the development of an optical frequency standard, based on the 2S1/2-2D5/2 “clock” transition at 674 nm in two isotopes of strontium. A≈200 Hz linewidth 674 nm laser has been frequency-stabilised to the centre of the 2S1/2-2D5/2 transition in two 88Sr+ ions, separately confined in two RF traps. The frequency locking algorithm for control of the laser frequency to the transition using the two ions is described. The mean difference of the frequency observed in the two ions is 34(33) Hz, where the number in parenthesis is the standard uncertainty. The Allan deviation of the difference frequency stability was observed to range from 10 Hz to 50 Hz at 30 s. In 87Sr+, there are “clock” transitions independent of the first order Zeeman shift; laser cooled 87Sr+ ions have been observed in a new trap with an oven containing isotopically enriched 87Sr

Published in:

Instrumentation and Measurement, IEEE Transactions on  (Volume:50 ,  Issue: 2 )