Atomic Clocks for GNSS

Hollberg, L.

doi:10.1002/9781119458555.ch47

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2022

2023

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“…They are the workhorse in frequency metrology: the definition of the SI second is now based on the microwave transition between the ground state hyperfine levels in Cs [19]. Rb clocks [20] and hydrogen masers significantly contribute to the international atomic time scale TAI [21] and form the time base in GNSS satellites [22]. Solid-state masers operating on hyperfine transitions in various defects in diamonds are being actively studied [23,24].…”

Section: Introductionmentioning

confidence: 99%

Effect of optical lattice field on characteristics of a clock transition in thulium atoms

Mishin¹,

Provorchenko²,

Tregubov³

et al. 2022

Quantum Electron.

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This paper presents a detailed analysis of the effect of the optical lattice field on clock transition spectroscopy, as exemplified by thulium atoms. We consider the applicability of the sifting of atoms in an optical lattice by ramping down the power of the laser light that produces it. This method allows the number of filled vibrational sublevels to be reduced down to a single vibrational state, without changing the inner state of the atoms. The effectiveness of the method is illustrated by the example of the spectroscopy of a clock transition in thulium atoms in the resolved sideband regime.

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