20 kW Monolithic Fiber Amplifier With Directly Dual-Wavelength Laser Diodes Counter Pumping

被引：0

作者：

Meng, Xiangming ^{[1
,2
,3
]}

Li, Fengchang ^{[1
,2
,3
]}

Chen, Jinbao ^{[1
,2
,3
]}

Xi, Xiaoming ^{[1
,2
,3
]}

Yang, Baolai ^{[1
,2
,3
]}

Wang, Peng ^{[1
,2
,3
]}

Pan, Zhiyong ^{[1
,2
,3
]}

Yan, Zhiping ^{[1
,2
,3
]}

Zhang, Hanwei ^{[1
,2
,3
]}

Wang, Xiaolin ^{[1
,2
,3
]}

Wang, Zefeng ^{[1
,2
,3
]}

机构：

[1] Natl Univ Def Technol, Coll Adv Interdisciplinary Studies, Changsha 410073, Peoples R China

[2] Natl Univ Def Technol, Nanhu Laser Lab, Changsha 410073, Peoples R China

[3] Natl Univ Def Technol, Hunan Prov Key Lab High Energy Laser Technol, Changsha 410073, Peoples R China

来源：

IEEE PHOTONICS JOURNAL | 2024年 / 16卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Laser excitation; Pump lasers; Optical fiber amplifiers; Fiber lasers; Power generation; Power amplifiers; Laser beams; Optical fiber devices; Power lasers; Semiconductor lasers; High-power fiber lasers; ld direct pumping; counter pumped scheme; large mode area; fiber amplifier; POWER; THRESHOLD;

D O I：

10.1109/JPHOT.2024.3502166

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this study, we demonstrate a high-power ytterbium-doped fiber laser (YDFL) based on laser diodes (LDs) directly pumping scheme. Tandem pumping and LD direct pumping are two common schemes for generating high-brightness laser output in YDFL. Compared to tandem pumping, LD direct pumping scheme has prominent advantages such as high efficiency, small size, and low cost. Therefore, it has a significant competitive advantage in industrial applications. We report a 20.27 kW monolithic fiber amplifier with directly dual-wavelength LDs counter pumping. The fiber amplifier emitting at 1080 nm has an optical-to-optical efficiency of 84.8%. The Raman intensity is more than 50 dB lower than the signal light intensity. By optimizing the design of YDF and components, the output power and beam quality of the laser can be further enhanced.

引用

页数：6

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