Observation And Laser Spectroscopy Of Ytterbium Monomethoxide, Yboch₃

Augenbraun, Benjamin

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https://hdl.handle.net/2142/111160 Copy

Description

Title

Observation And Laser Spectroscopy Of Ytterbium Monomethoxide, Yboch₃

Author(s)

Augenbraun, Benjamin

Contributor(s)

• Doyle, John M.
• Le, Anh T.
• Sawaoka, Hiromitsu
• Frenett, Alexander
• Lasner, Zack
• Steimle, Timothy

Issue Date

2021-06-24

Keyword(s)

Mini-symposium: Precision Spectroscopy for Fundamental Physics

Abstract

We describe a laser spectroscopic study of ytterbium monomethoxide, a species of interest to search for time-reversal symmetry violation using laser-cooled molecules. We have performed measurements of vibrational structure in the low-lying electronic states, vibrational branching ratios for several electronically excited vibronic states, and radiative lifetimes of low-lying electronic states. Both laser-induced fluorescence and dispersed fluorescence spectra have been recorded and analyzed. In addition, we have recorded the rotationally-resolved high-resolution excitation spectrum of the $\tilde{A}\,^2E_{1/2} \leftarrow \tilde{X}\,^2A_1$ band. \textit{Ab initio} calculations aided the assignment of vibronic emission bands and provide insight into the electronic and vibrational structure. We compare the structure of YbOCH$_3$ to the isoelectronic species YbF and YbOH, as well as to the previously studied alkaline-earth monomethoxides. Finally, we discuss how our results open a path to increased sensitivity to P- and/or T-violating physics in future measurements.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

Text

Language

eng

Permalink

http://hdl.handle.net/2142/111160

DOI

10.15278/isms.2021.RI09

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