We report the capture of cold strontium atoms in a magneto-optical trap (MOT) at a rate of 4 × 1010atoms/s . The MOT is loaded from an atomic beam decelerated by a Zeeman slower operating with a focused laser beam. The 461-nm laser, used for both cooling and trapping, was generated by sum-frequency mixing in a KTP crystal with diode lasers at 813 nm and a Nd:YAG laser at 1064 nm. As much as 115 mW of blue light was obtained.
© 2003 Optical Society of America
I. Courtillot, A. Quessada, R. P. Kovacich, J-J. Zondy, A. Landragin, A. Clairon, and P. Lemonde, "Efficient cooling and trapping of strontium atoms," Opt. Lett. 28, 468-470 (2003)