Absolute frequency measurement of rubidium 5S-7S two-photon transitions with a femtosecond laser comb |
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Authors: | Chui Hsiang-Chen Ko Ming-Sheng Liu Yi-Wei Shy Jow-Tsong Peng Jin-Long Ahn Hyeyoung |
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Institution: | Department of Physics, National Tsing Hua University, Hsinchu 300, Taiwan. hcchui@itri.org.tw |
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Abstract: | The absolute frequencies of rubidium 5S-7S two-photon transitions at 760 nm are measured to an accuracy of 20 kHz with an optical frequency comb based on a mode-locked femtosecond Ti:sapphire laser. The rubidium 5S-7S two-photon transitions are potential candidates for frequency standards and serve as important optical frequency standards for telecommunication applications. The accuracy of the hyperfine constant of the 7S1/2 state is improved by a factor of 5 in comparison with previous results. |
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