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Title:LASER-COOLABLE ASYMMETRIC TOP MOLECULES
Author(s):Augenbraun, Benjamin
Contributor(s):Doyle, John M.; Zelevinsky, Tanya ; Kozyryev, Ivan ; Steimle, Timothy ; Mengesha, Ephriem Tadesse
Subject(s):Vibrational structure/frequencies
Abstract:We identify a diverse class of alkaline-earth containing asymmetric top molecules, ranging from bent triatomics to molecules containing carbon rings, which can be laser cooled effectively with reasonable experimental complexity. Potential scientific impacts of these species span frontiers in controlled chemistry, quantum simulation, and searches for physics beyond the Standard Model of particle physics. We calculate vibrational branching ratios for over a dozen such molecules using a GF-matrix approach. As part of this analysis, we also describe methods to achieve rotationally closed optical cycles in these molecules. Using dispersed laser-induced fluorescence, we experimentally determine vibrational branching ratios and radiative lifetimes for the low-lying electronic states of CaSH and CaNH2, two prototypical laser-coolable asymmetric tops. Both species are found to be highly favorable for direct laser cooling. These measurements are compared to \textit{ab initio} predictions. We present a practical roadmap to laser cool asymmetric top molecules, including chiral species.
Issue Date:25-Jun-20
Publisher:International Symposium on Molecular Spectroscopy
Citation Info:APS
Genre:CONFERENCE PAPER/PRESENTATION
Type:Text
Language:English
URI:http://hdl.handle.net/2142/107707
Date Available in IDEALS:2020-06-26


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