Narrow-linewidth cooling of ${}^6$Li atoms using the 2S-3P transition

We report on a narrow-linewidth cooling of ${}^6$Li atoms using the $2S_{1\mathrm{/}2}\to 3P_{3\mathrm{/}2}$ transition in the ultraviolet (UV) wavelength regime. By combining the traditional red magneto-optical trap (MOT) at 671 nm and the UV MOT at 323 nm, we obtain a cold sample of $1.3\times {10}^9$ atoms with a temperature of 58 $\mu$K. Furthermore, we demonstrate a high efficiency magnetic transport for ${}^6$Li atoms with the help of the UV MOT. Finally, we obtain $8.1\times {10}^8$ atoms with a temperature of 296 $\mu$K at a magnetic gradient of 198 G/cm in the science chamber with a good vacuum environment and large optical access.