Title :
Light shift compensation in a Rb gas cell frequency standard with two-laser pumping
Author_Institution :
Datum, Inc., Irvine, CA, USA
Abstract :
One of the most important physical processes occurring in Rb frequency standards is the light shift, which depends strongly on the intensity and the optical frequency detuning of the pumping light. This paper presents a method to compensate the light shift by means of two-laser pumping. The two-laser pumping schemes will also improve the signal-to-noise ratio, because almost all atoms can be pumped to the desired state.
Keywords :
atomic clocks; compensation; frequency standards; laser beam applications; noise; optical pumping; rubidium; Rb; Rb frequency standards; Rb gas cell; SNR improvement; light shift compensation; optical frequency detuning; pumping light; signal-to-noise ratio; two-laser pumping; Atom optics; Atomic clocks; Filters; Frequency; Laser excitation; Optical buffering; Optical noise; Optical pumping; Pump lasers; Stationary state;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
