Isotope shifts and hyperfine structure in the 555.8-nmS10→P31l

Abstract

We apply our technique of using a Rb-stabilized ring-cavity resonator to measure the frequencies of various spectral components in the 555.8-nm 1 S 0 → 3 P 1 line of Yb. We determine the isotope shifts with 60 kHz precision, which is an order-of-magnitude improvement over the best previous measurement on this line. There are two overlapping transitions, 171 Yb͑1 / 2 → 3 / 2͒ and 173 Yb͑5 / 2 → 3 / 2͒, which we resolve by applying a magnetic field. We thus obtain the hyperfine constants in the 3 P 1 state of the odd isotopes with a significantly improved precision. Knowledge of isotope shifts and hyperfine structure should prove useful for high-precision calculations in Yb necessary to interpret ongoing experiments testing parity and time-reversal symmetry violation in the laws of physics.

An inverted crossover resonance aiding laser cooling of ^171Yb

“…In our case the enhanced absorption is manifest for the 556 nm beam intensity range of 18 I For the 171 Yb (F = 3/2) hyperfine transition with a nulled magnetic field, a very small perturbation to the line is seen that we attribute to the 173 Yb (F = 3/2) line. It is consistent with previous reports that the latter is within 3 MHz of the 171 Yb (F = 3/2) line and higher in frequency [39,40]. An inverted crossover resonance is again observed for 173 Yb (F = 5 2 → 5 2 ), however the contrast is significantly weaker than for 171 Yb.…”

Clock and inter-combination line frequency separation in171Yb

“…Our measurements will also assist those searching for the 1 S 0 − 3 P 0 line(s) in 173 Yb, given the previously reported value for its transition frequency [16]. Furthermore, the absolute optical frequencies of the other 1 S 0 − 3 P 1 isotopic lines can be inferred from previously reported measurements [17][18][19].…”

“…Henceforth, denoted with 1 S 0 − 3 P 1 . Based on an absolute frequency measurement of the 1 S 0 − 3 P 1 transition in 176 Yb and the relevant isotopic shift [19], a previous estimate for the 1…”

Enhanced molecular yield from a cryogenic buffer gas beam source via excited state chemistry

“…) transition, which differ by ∼3MHz [55], much less than the Doppler broadening in the cell. This overlap can explain lower enhancement rates, as the production of 171 YbOH will deplete the available population of other reactants.…”