Temperature dependence of the hyperfine transition frequency of the ground state of Rb 87 in a buffer medium

V. V. Batygin, Iu. G. Guzhva, Boris G. Matisov +1 more

Paul Bender, Victor W. Cohen

E. S. Ensberg, G. ZU PUTLITZ

Optical pumping methods have been extended to high buffer-gas pressures by replacing the customary resonance lamp by a white-light source. Rb ground-state Zeeman transitions were detected by resonance fluorescence at argon buffer-gas pressures up to 23 atm. Hyperfine-transition frequencies were measured at 4170 Torr (0\ifmmode^\circ\else\textdegree\fi{}C) and at 7390 Torr (0\ifmmode^\circ\else\textdegree\fi{}C) and showed the first nonlinear pressure dependence so far observed.

Jamie MacLennan, Andira Ramos, Nithiwadee Thaicharoen +1 more

T. McClelland, T. M. Kwon

The linewidth and frequency associated with the ground state hyperfine energy fo Rb 87 has been studied. A stable single mode semiconductor laser is used to optically pump Rb, in order to obtain a highly collimated, monochromatic light source. The laser is stabilized by locking its optical frequency to the Rb absorption line center. The dependence of the hyperfine frequency and resonance linewidth have been measured as a function of temperature, light intensity and microwave power; and a theoretical description of the linewidth vs. temperature data is presented. Keywords: Optical pumping; Rubidium; Frequency standard; Frequency shift; Light shift; Density matrix; Buffer gas; Linewidth; and Magnetic resonance.

Chin‐Chun Tsai, T. H. Bergeman, Eite Tiesinga +2 more