Isotope Selective Optical Pumping in a Dense Thallium Atomic Beam

摘要

Isotope selective optical pumping has been investigated in a dense thallium atomic beam. Theground state thallium atoms are optically pumped to metastable atoms by using a frequency-doubledsingle-mode continuous Ti:Sapphirc laser. The relative population of the metastable atoms of 203T1and 205T1 has been obtained by measuring the absorption strength of the metastable atoms afteroptical pumping. The isotope selectivity of the optical pumping technique strongly depends on thepower broadening effect. In addition, collisional energy transfer, such as inter-atomic collisions, andthe hyperfine state changing collision is discussed.