Experimental Measurement of the Absolute Frequencies and Hyperfine Coupling Constants of ¹³³Cs Using a Femtosecond Optical Frequency Comb

【摘要】 High resolution two-photon spectrum of the transitions 6S_1/2 → 6P_3/2 → 8S_1/2,9S_1/2 and 6S_1/2→ 6P_1/2→7D_3/2 in neutral ¹³³Cs are presented in a room-temperature vapor cell using a femtosecond optical frequency comb.Spectra are obtained by scanning the repetition frequency of the femtosecond optical frequency comb over the two-photon hyperfine structure.The centroid frequency of the 6S_1/2→8S_1/2,9S_1/2,7D_3/2 transitions are729009798.80（17） MHz,806761363.96（11） MHz,and 780894762.595（23） MHz,respectively.The hyperfine coupling constants of the corresponding states are also obtained.The results are consistent with the previous measurements.更多还原

【Abstract】 High resolution two-photon spectrum of the transitions 6S_1/2 → 6P_3/2 → 8S_1/2,9S_1/2 and 6S_1/2→ 6P_1/2→7D_3/2 in neutral ¹³³Cs are presented in a room-temperature vapor cell using a femtosecond optical frequency comb.Spectra are obtained by scanning the repetition frequency of the femtosecond optical frequency comb over the two-photon hyperfine structure.The centroid frequency of the 6S_1/2→8S_1/2,9S_1/2,7D_3/2 transitions are729009798.80（17） MHz,806761363.96（11） MHz,and 780894762.595（23） MHz,respectively.The hyperfine coupling constants of the corresponding states are also obtained.The results are consistent with the previous measurements.更多还原