Laser spectroscopy of 176Lu+

We perform high-resolution spectroscopy on Lu-176(+) including the S-1(0) <-> D-3(1) and S-1(0) <-> D-3(2) clock transitions. Hyperfine structures and optical frequencies relative to the S-1(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 D-3(2) hyperfine structure may provide access to higher order nuclear moments, specifically the magnetic octupole and electric hexadecapole moments.