Laser Operation of Tm: LuAG Single-Crystal Fiber Grown by the Micro-Pulling down Method

Laser Operation of Tm: LuAG Single-Crystal Fiber Grown by the Micro-Pulling down Method

Single crystals fiber (SCF) of LuAG doped with 2.0 at.% thulium has been grown by using micro-pulling down (µ-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 M2 were 1.14 and 1.6...

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Veröffentlicht in:Crystals (Basel) 2021-08, Vol.11 (8), p.898
Hauptverfasser: Liu, Jian, Dong, Jifei, Wang, Yinyin, Yuan, Hangqi, Song, Qingsong, Xue, Yanyan, Xu, Jie, Liu, Peng, Li, Dongzhen, Lebbou, Kheirreddine, Wang, Zhanxin, Zhao, Yongguang, Xu, Xiaodong, Xu, Jun
Format: Artikel
Sprache:eng
Schlagworte:
Chemical Sciences
Continuous radiation
Crystal fibers
Crystal growth
Crystal pulling
Diodes
Efficiency
Engineering Sciences
Experiments
Lasers
mid-infrared laser
Physics
Q factors
Ray tracing
Semiconductor lasers
single crystal fiber
Single crystals
Thulium
Tm:LuAG
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Zusammenfassung:Single crystals fiber (SCF) of LuAG doped with 2.0 at.% thulium has been grown by using micro-pulling down (µ-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 M2 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.
ISSN:2073-4352
2073-4352
DOI:10.3390/cryst11080898