Tunable distributed feedback color center laser using stabilized F_2~(+**) color centers in LiF crystal

摘要

The first room temperature stable tunable color center (CC) distributed feedback (DFB) laser is described. The laser utilizes stabilized F_2~(+**) centers in LiF (LiF:F_2~(+**)) as a gain medium. Tunable DFB lasing was achieved in the near IR region (882 - 962 nm) with a lasing linewidth of less than 0.2 cm~(-1). The lasing threshold was found to be 1.2 mJ, while the slope efficiency with respect to pump energy was found to be as high as 3%.