aqora

High-contrast dark resonance on the D2-line of 87Rb in a vapor cell with different directions of the pump-probe waves

Georgy A. Kazakov, I. E. Mazets, Yu. Rozhdestvensky +3 more

arXiv:physics/0503246The European Physical Journal DAug 1, 200510 citations

Comparison of 87Rb N-resonances for D1 and D2 transitions

Novikova, I, Phillips, D F, Taichenachev, A V +3 more

We report an experimental comparison of three-photon-absorption resonances (known as "N-resonances") for the D_1 and D_2 optical transitions of thermal 87Rb vapor. We find that the D_2 N-resonance has better contrast, a broader linewidth, and a more symmetric lineshape than the D_1 N-resonance. Taken together, these factors imply superior performance for frequency standards operating on alkali D_2 N-resonances, in contrast to coherent population trapping (CPT) resonances for which the D_2 transition provides poorer frequency standard performance than the D_1 transition.We report an experimental comparison of three-photon-absorption resonances (known as "N-resonances") for the D_1 and D_2 optical transitions of thermal 87Rb vapor. We find that the D_2 N-resonance has better contrast, a broader linewidth, and a more symmetric lineshape than the D_1 N-resonance. Taken together, these factors imply superior performance for frequency standards operating on alkali D_2 N-resonances, in contrast to coherent population trapping (CPT) resonances for which the D_2 transition provides poorer frequency standard performance than the D_1 transition.

Jan 11, 200617 citations

Evaluation of the CPT pseudo-resonance scheme for all-optical 87Rb frequency standard

I V Kazakov, Breschi, Matisov +5 more

European Frequency and Time ForumJan 1, 20060 citations

Resonance Broadening of the Sodium D-Lines

John Huennekens, Alan C. Gallagher

De Gruyter eBooksDec 31, 19832 citations

85Rb D1-Line Coherent-Population-Trapping Atomic Clock for Low-Power Operation

Shigeyoshi Goka

A 85Rb D1-line coherent-population-trapping (CPT) atomic clock with a natural-mixture Rb gas cell is demonstrated. D1-line excitation can generate a larger CPT resonance amplitude, and the choice of 85Rb rather than conventional 87Rb is because of its lower ground-state hyperfine-splitting frequency. The frequency deviation for the D1 line was measured using the same experimental setup as that for the D2 line except for the vertical-cavity surface-emitting laser (VCSEL) wavelength and RF power. In the case of D1-line excitation, the CPT resonance amplitude was 1.5 times that for the D2 line, and the light shift sensitivity was one-half that for the D2 line. The Allan standard deviations for the 85Rb D1 line, estimated from the frequency deviations, are <2.5×10-12 per day. In addition, the required RF is 1.5 GHz and its power is only -8.0 dBm.A 85Rb D1-line coherent-population-trapping (CPT) atomic clock with a natural-mixture Rb gas cell is demonstrated. D1-line excitation can generate a larger CPT resonance amplitude, and the choice of 85Rb rather than conventional 87Rb is because of its lower ground-state hyperfine-splitting frequency. The frequency deviation for the D1 line was measured using the same experimental setup as that for the D2 line except for the vertical-cavity surface-emitting laser (VCSEL) wavelength and RF power. In the case of D1-line excitation, the CPT resonance amplitude was 1.5 times that for the D2 line, and the light shift sensitivity was one-half that for the D2 line. The Allan standard deviations for the 85Rb D1 line, estimated from the frequency deviations, are <2.5×10-12 per day. In addition, the required RF is 1.5 GHz and its power is only -8.0 dBm.

Japanese Journal of Applied PhysicsJun 1, 20107 citations

85Rb BEC near a Feshbach resonance

N. R. Claussen, Simon L. Cornish, Jacob Roberts +2 more

Jan 1, 20011 citation

Contrast Measurements of CPT resonances Formed on the 87Rb D1 and D2 Line

Related papers

Contrast Measurements of CPT resonances Formed on the 87Rb D1 and D2 Line

Related papers