Jul 17 – 22, 2022
Royal Conservatory of Music, Toronto
America/Toronto timezone

Deflection of barium-monofluoride molecules

Jul 21, 2022, 5:00 PM
1h 30m
Hart House (Hart House)

Hart House

Hart House

7 Hart House Cir, Toronto, ON M5S 3H3
Poster presentation Precision measurement and tests of fundamental physics Poster session


Density-matrix simulations of an optical scheme for producing a large optical force on barium-monofluoride (BaF) molecules are presented. The scheme uses short laser pulses to induce excitation to the A Pi 1/2 state, with pulses from counter-propagating laser beams causing stimulated emission back to the ground electronic state. A magnetic field is used to remove degeneracies to avoid dark states. The calculated force is an order of magnitude larger than the maximum force possible with CW laser schemes. Additionally, because the molecules spend little time in the excited state, spontaneous decay is minimized, reducing or eliminating the need for re-pump lasers from other states (e.g., other ground vibrational states). Methods for electrostatic deflection of BaF will also be presented. The EDMcubed scheme [1] for measuring the electron electric dipole moment using BaF embedded in an Ar solid requires a BaF deflection to separate BaF from other products produced in a buffer-gas laser-ablation source.

[1] A. C. Vutha, M. Horbatsch and E. A. Hessels, Phys. Rev. A 98, 032513 (2018).

Presenter name Daniel Heinrich
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Primary authors

A. Marsman (York University) M. Horbatsch (York University) D. Heinrich (York University) N. McCall (York University) J. Perez Garcia (York University) H.-M. Yau (York University) R. L. Lambo (York University) G. K. Koyanagi (York University) M. C. George (York University) C. H. Storry (York University) Z. Corriveau (York University) J. T. Singh (Michigan State University) A. C. Vutha (University of Toronto) E. A. Hessels (York University)

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