Laser Operation of Tm: LuAG Single-Crystal Fiber Grown by the Micro-Pulling down Method
oleh: Jian Liu, Jifei Dong, Yinyin Wang, Hangqi Yuan, Qingsong Song, Yanyan Xue, Jie Xu, Peng Liu, Dongzhen Li, Kheirreddine Lebbou, Zhanxin Wang, Yongguang Zhao, Xiaodong Xu, Jun Xu
| Format: | Article |
|---|---|
| Diterbitkan: | MDPI AG 2021-07-01 |
Deskripsi
Single crystals fiber (SCF) of LuAG doped with 2.0 at.% thulium has been grown by using micro-pulling down (<i>ยต</i>-PD) technique. A continuous-wave output power of 2.44 W was achieved with a slope efficiency of 11.7% using a 783-nm diode laser as pump source. The beam quality factors <i>M</i><sup>2</sup> were 1.14 and 1.67 in the x and y directions, respectively. This is, to the best of our knowledge, the first report on the Tm:LuAG SCF laser. Using ray tracing analysis, the influence of laser performance by the pump intensity distribution in the SCF was also studied.