Polarization spectroscopy of the 1S0 3P1 transition of mercury isotopes at 253.7

We experimentally observe polarization spectroscopy (PS) of the 1S0-3P1 transition of mercury atom gases at 253.7 nm. The PS signal can be observed in all six richly abundant isotopes and the PS signal of six transitions for laser cooling are all clear and of a dispersive line shape.The optimized pu