Compensation of field-induced frequency shifts in Ramsey spectroscopy of optical clock transitions |
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| Authors: | A V Taichenachev V I Yudin C W Oates Z W Barber N D Lemke A D Ludlow U Sterr Ch Lisdat and F Riehle |
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| Institution: | 1.Institute of Laser Physics, Siberian Branch,Russian Academy of Sciences,Novosibirsk,Russia;2.National Institute of Standards and Technology,Boulder,USA;3.Physikalisch-Technische Bundesanstalt,Braunschweig,Germany;4.Novosibirsk State University,Novosibirsk,Russia;5.Novosibirsk State Technical University,Novosibirsk,Russia |
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| Abstract: | We have extended Ramsey spectroscopy by stepping the probe frequency during the two Ramsey excitation pulses to compensate
frequency shifts induced by the excitation itself. This makes precision Ramsey spectroscopy applicable even for transitions
that have Stark and Zeeman shifts comparable to the spectroscopic resolution. The method enables a new way to evaluate and
compensate key frequency shifts, which benefits in particular, optical clocks based on magnetic field-induced, spectroscopy,
two-photon transitions, or heavily forbidden transitions. |
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