THE EFFICIENCY INVESTIGATION OF ~(87)Rb ATOMIC BEAM LASER PUMPING FOR DESIGNING A QUANTUM DISCRIMINATOR FOR HIGH-PERFORMANCE SPACE-BORNE ATOMIC BEAM FREQUENCY STANDARD

摘要

The theoretical study of optical pumping and detection efficiency in the ~(87)Rb atomic beam is performed. Using "rate equations" approximation, the systems of kinetic equations are solved for populations of eight sublevels of the ~(87)Rb atom ground state in a cycle of one- and two-frequency hyperfine pumping and the results as regards the calculation of pumping efficiency for all schemes are given. A number of fluorescent photons of ~(87)Rb atoms is calculated when exciting a beam at hyperfine transitions of D lines of various polarization. The basis of correctness for the adopted model of calculation is given and the borders are shown for practical applicability of results. The efficiencies of main schemes for pumping and detection in ~(87)Rb and ~(133)Cs beam are compared. The advantages of using ~(87)Rb as a working substance for both process are shown.