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A full density-matrix simulation is performed for optical deflection of abarium monofluoride (BaF) beam. Pairs of counter-propagating laser pulses areused for stimulated absorption followed by stimulated emission. The schemeproduces a force which is nearly an order of magnitude larger than thatobtainable using continuous-wave laser deflection, and yields aforce-to-spontaneous-decay ratio which is more than an order of magnitudelarger. The large reduction in spontaneous decay is key to optical deflectionof molecules, where branching ratios to other vibrational states do not allowfor cycling transitions. This work is part of an effort by the EDM$^3$collaboration to measure the electric dipole moment of the electron using BaFmolecules embedded in a cryogenic argon solid. Deflection of BaF molecules willseparate them from the other ablation products coming from a buffer-gas-cooledablation source, before embedding them into the argon solid. Our simulationsshow that sufficiently large deflections for this separation are feasible.

Large optical forces on a barium monofluoride molecule using laser pulses for stimulated absorption and emission: A full density-matrix simulation