99 citations · 554 across the 17 of their papers we have counts for
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A new experiment to test parity symmetry in cold chiral molecules using vibrational spectroscopy
A Cournol, M. Manceau, M. Pierens +21
We present a brief review of our progress towards measuring parity violation in heavy-metal chiral complexes using mid-infrared Ramsey interferometry. We discuss our progress addre…
A buffer gas beam source for short, intense and slow molecular pulses
S. Truppe, M. Hambach, S. M. Skoff +6
Experiments with cold molecules usually begin with a molecular source. We describe the construction and characteristics of a cryogenic buffer gas source of CaF molecules. The sourc…
Characterising molecules for fundamental physics: an accurate spectroscopic model of methyltrioxorhenium derived from new infrared and millimetre-wave measurements
Pierre Asselin, Yann Berger, Thérèse R. Huet +6
Precise spectroscopic analysis of polyatomic molecules enables many striking advances in physical chemistry and fundamental physics. We use several new high-resolution spectroscopi…
High-resolution mid-infrared spectroscopy of buffer-gas-cooled methyltrioxorhenium molecules
Sean Tokunaga, R. J. Hendricks, M. Tarbutt +1
We demonstrate cryogenic buffer-gas cooling of gas-phase methyltrioxorhenium (MTO). This molecule is closely related to chiral organometallic molecules where the parity-violating e…
A high quality, efficiently coupled microwave cavity for trapping cold molecules
D. P. Dunseith, S. Truppe, R. J. Hendricks +3
We characterize a Fabry-Perot microwave cavity designed for trapping atoms and molecules at the antinode of a microwave field. The cavity is fed from a waveguide through a small co…
Vibrational branching ratios and hyperfine structure of BH and its suitability for laser cooling
R. J. Hendricks, D. A. Holland, S. Truppe +2
The simple structure of the BH molecule makes it an excellent candidate for direct laser cooling. We measure the branching ratios for the decay of the state to…
Microwave spectroscopy of Lambda-doublet transitions in the ground state of CH
S. Truppe, R. J. Hendricks, S. K. Tokunaga +2
The Lambda-doublet transitions in CH at 3.3 and 0.7 GHz are unusually sensitive to variations in the fine-structure constant and the electron-to-proton mass ratio. We describe meth…
Measurement of the lowest millimetre-wave transition frequency of the CH radical
S. Truppe, R. J. Hendricks, E. A. Hinds +1
The CH radical offers a sensitive way to test the hypothesis that fundamental constants measured on earth may differ from those observed in other parts of the universe. The startin…
A search for varying fundamental constants using Hz-level frequency measurements of cold CH molecules
S. Truppe, R. J. Hendricks, S. K. Tokunaga +5
Many modern theories predict that the fundamental constants depend on time, position, or the local density of matter. We develop a spectroscopic method for pulsed beams of cold mol…
Characterization of a cryogenic beam source for atoms and molecules
N. E. Bulleid, S. M. Skoff, R. J. Hendricks +3
We present a combined experimental and theoretical study of beam formation from a cryogenic buffer gas cell. Atoms and molecules are loaded into the cell by laser ablation of a tar…
Traveling wave deceleration of heavy polar molecules in low-field seeking states
N. E. Bulleid, R. J. Hendricks, E. A. Hinds +4
We demonstrate the deceleration of heavy polar molecules in low-field seeking states by combining a cryogenic source and a travelling-wave Stark decelerator. The cryogenic source p…
Franck-Condon Factors and Radiative Lifetime of the A^{2}Π_{1/2} - X^{2}Σ^{+} Transition of Ytterbium Monoflouride, YbF
Xiujuan Zhuang, Anh Le, Timothy C. Steimle +8
The fluorescence spectrum resulting from laser excitation of the A^{2}Π_{1/2} - X^{2}Σ^{+} (0,0) band of ytterbium monofluoride, YbF, has been recorded and analyzed to determine th…
Diffusion, thermalization and optical pumping of YbF molecules in a cold buffer gas cell
S. M. Skoff, R. J. Hendricks, C. D. J. Sinclair +5
We produce YbF molecules with a density of 10^18 m^-3 using laser ablation inside a cryogenically-cooled cell filled with a helium buffer gas. Using absorption imaging and absorpti…
Doppler-free laser spectroscopy of buffer gas cooled molecular radicals
S. M. Skoff, R. J. Hendricks, C. D. J. Sinclair +5
We demonstrate Doppler-free saturated absorption spectroscopy of cold molecular radicals formed by laser ablation inside a cryogenic buffer gas cell. By lowering the temperature, c…