Branching ratios, radiative lifetimes and transition dipole moments for YbOH

This is the authors' abstract. We don't add key points for this paper.

Medium resolution (\Δ \ν ~ 3 GHz) laser-induced fluorescence (LIF) spectra of a rotationally cold sample of YbOH in the 17300-17950⁻¹ range have been recorded using two-dimensional (excitation and fluorescence) spectroscopy. High resolution (\Δ \λ ~ 0.65) dispersed laser induced fluorescence (DLIF) spectra and radiative decay of numerous bands detected in the medium resolution LIF excitation were recorded. The vibronic energy levels of the ̃ \\,²\Σ⁺ state were predicted using a discrete variable representation and compared with observations. The radiative decay curves were to produce fluorescence lifetimes. DLIF spectra resulting from high (\Δ \ν < 10 MHz) LIF excitation of individual low-rotational in the ̃ \\, ²\Π1/2(0,0,0) - ̃ \\,²\Σ⁺(0,0,0), ̃ \\, ²\Π1/2(1,0,0) - ̃ \\,²\Σ⁺(0,0,0), [17.73]\Ω=0.5(0,0,0) - ̃ \\, ²\Σ⁺(0,0,0) were also recorded. The DLIF spectra were analyzed to determine branching which were combined with radiative lifetimes to obtain transition dipole. The implications for laser cooling and trapping of YbOH are discussed.