Optical repumping of triplet-Pstates enhances magneto-optical trapping of ytterbium atoms

Jun Woo Cho, Han-gyeol Lee, Sangkyung Lee, Jaewook Ahn, Won-Kyu Lee, Dai-Hyuk Yu, Sun Kyung Lee, Chang Yong Park
2012 Physical Review A. Atomic, Molecular, and Optical Physics  
Radiative decay from the excited $^1P_1$ state to metastable $^3P_2$ and $^3P_0$ states is expected to limit attainable trapped atomic population in a magneto-optic trap of ytterbium (Yb) atoms. In experiments we have carried out with optical repumping of $^3P_{0,2}$ states to $^3P_1$, we observe enhancement of trapped atoms yield in the excited $^1P_1$ state. The individual decay rate to each metastable state is measured and the results show an excellent agreement with the theoretical values.
doi:10.1103/physreva.85.035401 fatcat:zssyo5a4ofd6bnzgsrde6vvugi