Recently thulium has been condensed to Bose-Einstein condensate. Machine learning was used to avoid a detailed study of all obstacles making cooling difficult. This paper analyses the atomic loss mechanism for the 532 nm optical trap, used in the Bose-condensation experiment, and compares it with the alternative and more traditional micron-range optical dipole trap. We also measured the scalar and tensor polarizability of thulium at 1064 nm and was found to be $167\pm 25$ a.u. ($275\pm 41\times { { 10}^{ -41}}\text{ F }\cdot \text{ }{ { \text{ m}}^{ \text{ 2}}}$) and $-4\pm 1$ a.u. ($7\pm 2\times { { 10}^{ -41}}\text{ F }\cdot \text{ }{ { \text{ m}}^{ \text{ 2}}}$).
Categories: physics.atom-ph