Laser spectroscopy of ${}^{176}$Lu${}^{+}$

Abstract

We perform high resolution spectroscopy on ${}^{176}$Lu${}^{+}$ including the ${}^1{S}_0\leftrightarrow {}^3{D}_1$ and ${}^1{S}_0\leftrightarrow {}^3{D}_2$ clock transitions. Hyperfine structures and optical frequencies relative to the ${}^1{S}_0$ ground state of four low lying excited states are given to a few tens of kHz resolution. This covers the most relevant transitions involved in clock operation with this isotope. Additionally, measurements of the ${}^3{D}_2$ hyperfine structure may provide access to higher order nuclear moments, specifically the magnetic octupole and electric hexadecapole moments.

13 pages, 5 figures, correct an incorrect g-factor used in the evaluation of Zeeman shifts on 1S0-to-3D2 transitions