An ultracold molecular beam for testing fundamental physics

We use two-dimensional transverse laser cooling to produce an ultracold beam of YbF molecules. Through experiments and numerical simulations, we study how the is influenced by polarization configuration, intensity, detuning applied magnetic field. The part contains more than $2 \times 10^5$ molecules per shot has a temperature below 200 $\mu$K, yields 300-fold increase in brightness beam. method can improve precision that test fundamental physics. In particular, suitable for measuring electron electric dipole moment with statistical better $10^{-30}$ e cm.