Title :
Precision interferometric frequency measurement of the 674 nm 2S1/2-2D5/2 transition in a single cold Sr+ ion
Author :
Barwood, G.P. ; Edwards, C.S. ; Gill, P. ; Huang, G. ; Klein, H.A. ; Rowley, W.R.C.
Author_Institution :
Nat. Phys. Lab., Teddington, UK
fDate :
4/1/1995 12:00:00 AM
Abstract :
The narrow linewidth 674 nm 2S1/2-2 D5/2 transition in a cold Sr+ ion confined within an RF Paul trap has been probed using an optically narrowed 674 nm diode laser offset-locked to a second diode laser stabilized to a high-finesse ultra-low-expansion reference cavity. The transition frequency has been measured by means of interferometric comparison with an iodine-stabilized 633 nm He-Ne reference standard. A preliminary value for the 2S1/2-2D5/2 transition line center is 444 779 045 (9) MHz, limited by residual micromotion and low magnetic field Zeeman splitting
Keywords :
Zeeman effect; beam handling techniques; frequency measurement; frequency stability; light interferometry; measurement by laser beam; measurement standards; particle traps; positive ions; strontium; visible spectra; 674 nm; 2S1/2-2D5/2 transition line; I2 stabilized He-Ne reference standard; RF Paul trap; Sr; Sr+ ion; interferometric frequency measurement; magnetic field Zeeman splitting; residual micromotion; second diode lase; transition frequency; ultra-low-expansion reference cavity; Cooling; Diode lasers; Frequency measurement; Laser theory; Laser transitions; Magnetic field measurement; Masers; Optical interferometry; Particle beam optics; Strontium;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
