268 citations · 1.9k across the 29 of their papers we have counts for
30 papers
Elucidating Au-C Bonding via Laser Spectroscopy of Gold Monocarbide
Rory M. Weldon, Danielle M. Darling, Nicole M. Albright +4
Gold monocarbide (AuC) has been produced and characterized using laser spectroscopy, representing the first reported observation of AuC. We recorded the optical spectrum of gas-pha…
Hyperfine-Resolved Spectroscopy of Dysprosium Monoxide (DyO) for Precision Measurements of the Nuclear Schiff Moment
Zack D. Lasner, Aidan T. Ohl, Nicole M. Albright +5
We perform laser spectroscopy of dysprosium monoxide (DyO) to determine the hyperfine structure of the ground X8 and excited [17.1]7 states in the Dy and Dy isotopo…
Magneto-optical trapping of a heavy polyatomic molecule for precision measurement
Zack D. Lasner, Alexander Frenett, Hiromitsu Sawaoka +10
We report a magneto-optical trap of strontium monohydroxide (SrOH) containing 2000(600) molecules at a temperature of 1.2(3) mK. The lifetime is 91(9) ms, which is limited by decay…
Optical Cycling and Sensitivity to the Electron's Electric Dipole Moment in Gold-Containing Molecules
K. Cooper Stuntz, Kendall L. Rice, Lan Cheng +1
We propose diatomic molecules built from gold and carbon-group atoms as promising candidates for optical cycling and precision measurements. We show that this class of molecules (A…
Relativistic Exact Two-Component Coupled-Cluster Study of Molecular Sensitivity Factors for Nuclear Schiff Moments
Tianxiang Chen, Chaoqun Zhang, Lan Cheng +12
Relativistic exact two-component coupled-cluster calculations of molecular sensitivity factors for nuclear Schiff moments (NSMs) are reported. We focus on molecules containing heav…
Direct Laser Cooling of Polyatomic Molecules
Benjamin L. Augenbraun, Loic Anderegg, Christian Hallas +3
Over the past decade, tremendous progress has been made to extend the tools of laser cooling and trapping to molecules. Those same tools have recently been applied to polyatomic mo…
Zeeman-Sisyphus Deceleration for Heavy Molecules with Perturbed Excited-State Structure
Hiromitsu Sawaoka, Alexander Frenett, Abdullah Nasir +4
We demonstrate and characterize Zeeman-Sisyphus (ZS) deceleration of a beam of ytterbium monohydroxide (YbOH). Our method uses a combination of large magnetic fields ( 2.5 T)…
High-Resolution Laser Spectroscopy of a Functionalized Aromatic Molecule
Benjamin L. Augenbraun, Sean Burchesky, Andrew Winnicki +1
We present a high-resolution laser spectroscopic study of the and transitions of calcium (I) phenoxide, Ca…
Laser spectroscopy of aromatic molecules with optical cycling centers: strontium (I) phenoxides
Guanming Lao, Guo-Zhu Zhu, Claire E. Dickerson +5
We report the production and spectroscopic characterization of strontium (I) phenoxide (, or SrOPh) and variants featuring electron-withdrawing groups…
Pathway Towards Optical Cycling and Laser Cooling of Functionalized Arenes
Debayan Mitra, Zack D. Lasner, Guo-Zhu Zhu +8
Rapid and repeated photon cycling has enabled precision metrology and the development of quantum information systems using a variety of atoms and simple molecules. Extending optica…
Functionalizing Aromatic Compounds with Optical Cycling Centers
Guo-Zhu Zhu, Debayan Mitra, Benjamin L. Augenbraun +9
Molecular design principles provide guidelines for augmenting a molecule with a smaller group of atoms to realize a desired property or function. We demonstrate that these concepts…
Photon spin molasses for laser cooling molecular rotation
W. C. Campbell, B. L. Augenbraun
Laser cooling of translational motion of small molecules is performed by addressing transitions that ensure spontaneous emission cannot cause net rotational excitation. This will n…
Zeeman-Sisyphus Deceleration of Molecular Beams
Benjamin L. Augenbraun, Alexander Frenett, Hiromitsu Sawaoka +5
We present a robust, continuous molecular decelerator that employs high magnetic fields and few optical pumping steps. CaOH molecules are slowed, accumulating at low velocities in…
Fast and High-Yield Loading of a D MOT of Potassium from a Cryogenic Buffer Gas Beam
Zack Lasner, Debayan Mitra, Maryam Hiradfar +5
We demonstrate the direct loading of a D MOT of potassium-39 atoms from a cryogenic buffer gas beam source. We load atoms in a 10 ms pulse, with no degradation in perfor…
Accurate prediction and measurement of vibronic branching ratios for laser cooling linear polyatomic molecules
Chaoqun Zhang, Benjamin L. Augenbraun, Zack D. Lasner +3
We report a generally applicable computational and experimental approach to determine vibronic branching ratios in linear polyatomic molecules to the level, including for…
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.…
Franck-Condon tuning of optical cycling centers by organic functionalization
Claire E. Dickerson, Han Guo, Ashley J. Shin +4
Laser induced electronic excitations that spontaneously emit photons and decay directly to the initial ground state ("optical cycling transitions") are used in quantum information…
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…
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…
1D Magneto-Optical Trap of Polyatomic Molecules
Louis Baum, Nathaniel B. Vilas, Christian Hallas +4
We demonstrate a 1D magneto-optical trap of the polar free radical calcium monohydroxide (CaOH). A quasi-closed cycling transition is established to scatter photons per…
Laser-Cooled Polyatomic Molecules for Improved Electron Electric Dipole Moment Searches
Benjamin L. Augenbraun, Zack D. Lasner, Alexander Frenett +4
Doppler and Sisyphus cooling of YbOH are achieved and studied. This polyatomic molecule has high sensitivity to physics beyond the Standard Model and represents a new class…
3-D Magneto-Optical Trap of Yttrium Monoxide
Alejandra L. Collopy, Shiqian Ding, Yewei Wu +5
We report three-dimensional trapping of an oxide molecule (YO), using a radio-frequency magneto-optical trap (MOT). The total number of molecules loaded is 1.5 ,…