154 citations · 575 across the 23 of their papers we have counts for
25 papers
Order of Magnitude Improved Optical Trapping of Molecules Through Transverse Cooling
Abdullah Nasir, Annika Lunstad, Mingda Li +5
We demonstrate a two-dimensional Sisyphus laser cooling method that increases the number of strontium monohydroxide (SrOH) molecules loaded into a magneto-optical trap by a factor…
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…
High-sensitivity molecular spectroscopy of SrOH using magneto-optical trapping
Annika Lunstad, Hiromitsu Sawaoka, Zack Lasner +5
Polyatomic molecules are projected to be powerful tools in searches for physics beyond the Standard Model (BSM), including new CP-violating (CPV) interactions and ultralight dark m…
Optical Trapping of SrOH Molecules for Dark Matter and T-violation Searches
Hiromitsu Sawaoka, Abdullah Nasir, Annika Lunstad +4
We report an optical dipole trap of strontium monohydroxide (SrOH) with 1400(300) trapped molecules. Through optical pumping, we access vibrational states that are proposed for imp…
A cryogenic buffer gas beam source with in-situ ablation target replacement
Zhen Han, Zack Lasner, Collin Diver +11
The design and performance of a cryogenic buffer gas beam (CBGB) source with a load-lock system is presented. The ACME III electron electric dipole moment (eEDM) search experiment…
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…
Thermal Emission of Strontium in a Cryogenic Buffer Gas Beam Source
Andrew Winnicki, Zack D. Lasner, John M. Doyle
We demonstrate production of cold atomic strontium (Sr) and strontium-containing molecules (SrOH) in a cryogenic buffer gas beam source via direct heating of strontium oxide (SrO)…
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…
Vibrational Branching Ratios for Laser-Cooling of Nonlinear Strontium-Containing Molecules
Alexander Frenett, Zack Lasner, Lan Cheng +1
The vibrational branching ratios from the lowest excited electronic state for , , and are measured at the level. Spectr…
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…
Vibronic branching ratios for nearly-closed rapid photon cycling of SrOH
Zack Lasner, Annika Lunstad, Chaoqun Zhang +2
The vibrational branching ratios of SrOH for radiative decay to the ground electronic state, , from the first two electronically excited states, and $B^{2}Σ^{+…
New Horizons: Scalar and Vector Ultralight Dark Matter
D. Antypas, A. Banerjee, C. Bartram +123
The last decade has seen unprecedented effort in dark matter model building at all mass scales coupled with the design of numerous new detection strategies. Transformative advances…
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…
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.…
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…
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…
Attaining the shot-noise-limit in the ACME measurement of the electron electric dipole moment
C. D. Panda, C. Meisenhelder, M. Verma +7
Experimental searches for the electron electric dipole moment, , probe new physics beyond the Standard Model. Recently, the ACME Collaboration set a new limit of $|d_e| <1.1\t…
Statistical sensitivity of phase measurements via laser-induced fluorescence with optical cycling detection
Zack Lasner, David DeMille
In atomic and molecular phase measurements using laser-induced fluorescence detection, optical cycling can enhance the effective photon detection efficiency and hence improve sensi…
Enhanced Sensitivity to Ultralight Bosonic Dark Matter in the Spectra of the Linear Radical SrOH
Ivan Kozyryev, Zack Lasner, John M. Doyle
Coupling between Standard Model particles and theoretically well-motivated ultralight dark matter (UDM) candidates can lead to time variation of fundamental constants including the…
An Underappreciated Radiation Hazard from High Voltage Electrodes in Vacuum
Adam West, Zack Lasner, David DeMille +6
The use of high voltage (HV) electrodes in vacuum is commonplace in physics laboratories. In such systems, it has long been known that electron emission from an HV cathode can lead…