6 kW single mode monolithic fiber laser enabled by effective mitigation of the transverse mode instability

被引：77
作者：
Yang, Baolai [1 ,2 ,3 ]
Wang, Peng [1 ,2 ,3 ]
Zhang, Hanwei [1 ,2 ,3 ]
Xi, Xiaoming [1 ,2 ,3 ]
Shi, Chen [1 ,2 ,3 ]
Wang, Xiaolin [1 ,2 ,3 ]
Xu, Xiaojun [1 ,2 ,3 ]
机构：
[1] Natl Univ Def Technol, Coll Adv Interdisciplinary Studies, Changsha 410073, Peoples R China
[2] State Key Lab Pulsed Power Laser Technol, Changsha 410073, Peoples R China
[3] Hunan Prov Key Lab High Energy Laser Technol, Changsha 410073, Peoples R China
来源：
OPTICS EXPRESS | 2021年 / 29卷 / 17期
基金：
中国国家自然科学基金;
关键词：
NARROW-LINEWIDTH; POWER; AMPLIFIER; THRESHOLDS; OSCILLATOR;
D O I：
10.1364/OE.433630
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The transverse mode instability (TMI) has been one of the main limitations for the power scaling of single mode fiber lasers. In this work, we report a 6 kW single mode monolithic fiber laser enabled by effective mitigation of the TMI. The fiber laser employs a custom-made wavelength-stabilized 981 nm pump source, which remarkably enhanced the TMI threshold compared with the wavelength of 976 nm. With appropriately distributing bidirectional pump power, the monolithic fiber laser is scaled to 6 kW with single mode beam quality (M-2 <1.3). The stability is verified in a continuous operation for over 2 hours with power fluctuation below 1 %. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
引用
收藏
页码：26366 / 26374
页数：9
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