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Observation and laser spectroscopy of ytterbium monomethoxide, YbOCH
Benjamin L. Augenbraun, Zack D. Lasner, Alexander Frenett +4
We describe a laser spectroscopic study of ytterbium monomethoxide, YbOCH, a species of interest to searches for time-reversal symmetry violation using laser-cooled molecules.…
Establishing a nearly closed cycling transition in a polyatomic molecule
Louis Baum, Nathaniel B. Vilas, Christian Hallas +4
We study optical cycling in the polar free radical calcium monohydroxide (CaOH) and establish an experimental path towards scattering photons. We report rovibronic bra…
Direct Laser Cooling of a Symmetric Top Molecule
Debayan Mitra, Nathaniel B. Vilas, Christian Hallas +6
We report direct laser cooling of a symmetric top molecule, reducing the transverse temperature of a beam of calcium monomethoxide (CaOCH) to mK while addressing tw…
Branching ratios, radiative lifetimes and transition dipole moments for YbOH
Ephriem Tadesse Mengesha, Anh T. Le, Timothy C. Steimle +5
Medium resolution ( ~ 3 GHz) laser-induced fluorescence (LIF) excitation spectra of a rotationally cold sample of YbOH in the 17300-17950 cm range have been recorded usi…
Observation of Collisions between Two Ultracold Ground-State CaF Molecules
Lawrence W. Cheuk, Loïc Anderegg, Yicheng Bao +5
We measure inelastic collisions between ultracold CaF molecules by combining two optical tweezers, each containing a single molecule. We observe collisions between CaF molecu…
Molecular Asymmetry and Optical Cycling: Laser Cooling Asymmetric Top Molecules
Benjamin L. Augenbraun, John M. Doyle, Tanya Zelevinsky +1
We present a practical roadmap to achieve optical cycling and laser cooling of asymmetric top molecules (ATMs). Our theoretical analysis describes how reduced molecular symmetry, a…