5 kW振荡放大一体化高可靠性光纤激光器

奚小明; 曾令筏; 张汉伟; 王鹏; 杨保来; 王小林; 许晓军

doi:10.11884/HPLPB202133.210245

5 kW振荡放大一体化高可靠性光纤激光器

doi: 10.11884/HPLPB202133.210245

1.
国防科技大学前沿交叉学科学院，长沙 410073
2.
脉冲功率激光技术国家重点实验室，长沙 410073
3.
高能激光技术湖南省重点实验室，长沙 410073

基金项目: 长沙市杰出创新青年培养计划（kq2009004）；脉冲功率激光技术国家重点实验室主任基金项目（SKL 2020ZR04）

详细信息

作者简介:
奚小明（1987—），男，博士，讲师，从事光纤激光器设计和测试技术研究

通讯作者:
王小林（1985—），男，博士，副研究员，从事高功率光纤激光器技术研究

许晓军（1973—），男，博士，研究员，从事高能激光技术研究

中图分类号: TN242
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- 被引次数: 0
出版历程
- 收稿日期: 2021-06-19
- 修回日期: 2021-07-05
- 网络出版日期: 2021-07-12
- 刊出日期: 2021-07-15

5 kW oscillating-amplifying integrated fiber laser with high reliability

1.
College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China
2.
State Key Laboratory of Pulsed Power Laser Technology, Changsha 410073, China
3.
Hunan Provincial Key Laboratory of High Energy Laser Technology, Changsha 410073, China

摘要

摘要:
振荡放大一体化光纤激光器具有振荡器抗回光能力强和放大器效率高的双重优点，在工业领域有着很好的应用前景。国防科大首次实现了输出功率大于5 kW的振荡放大一体化光纤激光器，光光效率约为80%。重点研究了该激光器在高功率运行时的可靠性和控制逻辑。首先，类比普通放大器中“不开种子、只开放大”的情况：在振荡部分泵浦源关闭时，瞬间开启放大部分泵浦源；其次，类比普通放大器中“不关放大、只关种子”的情况：在放大部分泵浦源开启时，瞬间关闭振荡部分泵浦。实验结果表明，以上两种极端情况下激光器都可稳定正常工作。首次验证了该激光器在控制逻辑和泵浦源开关顺序方面无特殊要求。
- 光纤激光器 /
- 振荡放大一体化 /
- 受激拉曼散射 /
- 模式不稳定效应 /
- 控制逻辑
Abstract:
We demonstrated a novel fiber laser system with oscillating-amplifying integrated configuration and a 5 kW output power was achieved experimentally for the first time with optical-to-optical efficiency of 80%. The reliability and the boot order of the laser system were studied intensively at high power level. When the laser system is deliberately turn on in a wrong order, such as the pump of the amplifying section is switched on before the oscillating section, or the pump of the oscillating section is switched off before the amplifying section, which is normally a disaster in a classic main oscillator power amplifier (MOPA) system, the laser system can trouble-free operate at full power level. For the first time, it is verified that there is no priority between the amplifier and the seed in the oscillating-amplifying integrated fiber laser system.
- fiber laser /
- oscillating-amplifying integration /
- stimulated Raman effect /
- transverse mode instability /
- control logic

HTML全文

图 1 5 kW振荡放大一体化光纤激光器结构

Figure 1. Schematic of the oscillating-amplifying integrated fiber laser system

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图 2 5 kW振荡放大一体化光纤激光器实验结果

Figure 2. Experimental results of the fiber laser system

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参考文献(6)

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[3]	王小林, 张汉伟, 杨保来, 等. 高功率掺镱光纤振荡器: 研究现状与发展趋势[J]. 中国激光, 2021, 48:0401004. (Wang Xiaolin, Zhang Hanwei, Yang Baolai, et al. High-power ytterbium-doped fiber laser oscillator: current situation and future developments[J]. Chinese Journal of Lasers, 2021, 48: 0401004 doi: 10.3788/CJL202148.0401004
[4]	奚小明, 杨欢, 曾令筏, 等. 国产纺锤形增益光纤主振荡功率放大器实现5 kW输出[J]. 强激光与粒子束, 2021, 33:021001. (Xi Xiaoming, Yang Huan, Zeng Lingfa, et al. 5 kW all-fiber amplifier based on homemade spindle-shaped Yb-doped fiber[J]. High Power Laser and Particle Beams, 2021, 33: 021001 doi: 10.11884/HPLPB202133.200309
[5]	舒强, 李成钰, 林宏奂, 等. 2 kW抗反射振荡-放大一体化光纤激光器[J]. 中国激光, 2018, 45:0801004. (Shu Qiang, Li Chengyu, Lin Honghuan, et al. 2 kW class antireflection fiber laser with oscillator-amplifier integration[J]. Chinese Journal of Lasers, 2018, 45: 0801004 doi: 10.3788/CJL201845.0801004
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