Over 10-kW fiber laser spectral beam combination based on dichromatic mirrors

Xi Xiao-Ming; Yang Bao-Lai; Wang Peng; Zhang Han-Wei; Wang Xiao-Lin; Han Kai; Wang Ze-Feng; Xu Xiao-Jun; Chen Jin-Bao

doi:10.7498/aps.72.20230657

Abstract

Owing to the advantages of good beam quality, high conversion efficiency, convenient thermal management and compact structure, high power fiber lasers have been widely desired in industrial processing. So far, the output power has been strictly limited by the nonlinear effects and transverse mode instability. In order to break through the power limitation, here we experimentally demonstrate a power boosting technology called spectral beam combination based on dichromatic mirrors. Firstly, high power fiber amplifiers with different central wavelengths are established for the spectral combination. Secondly, utilizing a dual-beam combined system and two homemade high power fiber amplifiers, an output power of 10 kW is achieved, with a remarkable combination efficiency of 98.3% and a beam quality of M ²～1.33. Secondly, using a three-beam combined system, an output power of 13.5 kW is obtained with a combination efficiency of 96.8% and beam quality of M ²～1.61. By increasing the number of input beams and their output power as well, we believe that a higher output power can be achieved based on dichromatic mirror spectral beam combination.

Keywords:

Authors and contacts

1.
College of Advanced Interidisciplinary Studies, National University of Defense Technology, Changsha 410073, China
2.
Nanhu Laser Laboratory, National University of Defense Technology, Changsha 410073, China
3.
Hunan Provincial Key Laboratory of High Energy Laser Technology, Changsha 410073, China

Corresponding author: Wang Xiao-Lin, chinaphotonics@163.com ; Wang Ze-Feng, zefengwang_nudt@163.com ;

Funds: Project supported by the National Natural Science Foundation of China (Grant Nos. 61905282, 62005315).

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References

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Cited By

图 1 光纤激光放大器结构示意图

Figure 1. Schematic of the fiber amplifiers.

DownLoad: Full-Size Img PowerPoint

图 2 两路合束实验中激光器在最高输出功率时的光谱

Figure 2. Optical spectra of the fiber amplifiers at the maximum output power for the dual-beam combination experiment.

DownLoad: Full-Size Img PowerPoint

图 8 (a)三路激光合束装置示意图; (b)三路激光光谱以及双色镜的透射曲线

Figure 8. (a) Schematic of the three-beam combining setup; (b) beam spectra and transmission curve of the dichromatic mirrors.

DownLoad: Full-Size Img PowerPoint

图 3 1050 nm光纤激光放大器结构示意图

Figure 3. Schematic of the 1050 nm fiber amplifier.

DownLoad: Full-Size Img PowerPoint

图 4 三路合束实验中单路激光器最高功率时的光谱

Figure 4. Optical spectra of the fiber amplifiers for the three-beam combination experiment.

DownLoad: Full-Size Img PowerPoint

图 5 (a)两路激光合束装置示意图和(b)双色镜透射曲线(CL, 凹透镜; PM, 功率计)

Figure 5. (a) Schematic diagram of the dual-beam combining setup; (b) transmission curve of the dichromatic mirror (CL, concave lens; PM, power meter).

DownLoad: Full-Size Img PowerPoint

图 6 两路合成实验结果　(a)功率与效率; (b)合成输出光谱和光斑

Figure 6. Results of the dual-beam combining experiment: (a) Optical power and combining efficiency; (b) output spectrum and beam profile.

DownLoad: Full-Size Img PowerPoint

图 7 两路合束系统中单路(a), (b)和合束后(c)激光的光束质量测量结果

Figure 7. Measured beam quality of the (a), (b) fiber amplifiers and the (c) dual-beam combined laser.

DownLoad: Full-Size Img PowerPoint

图 9 单路激光光束质量测量结果　(a) 1050 nm; (b) 1069 nm; (c) 1085 nm

Figure 9. Measured beam quality of the pre-combining lasers: (a) 1050 nm; (b) 1069 nm; (c) 1085 nm.

DownLoad: Full-Size Img PowerPoint

图 10 三路合束激光的(a)光谱和(b)光束质量

Figure 10. Optical spectrum (a) and beam quality (b) of the three-beam combined laser.

DownLoad: Full-Size Img PowerPoint

[1]	Nilsson J, Payne D 2011 Science 332 921 Google Scholar
[2]	Shi W, Fang Q, Zhu X, Norwood R A, Peyghambarian N 2014 Appl. Opt. 53 6554 Google Scholar
[3]	Zervas M N 2014 Inter. J. Mod. Phys. B 28 1442009 Google Scholar
[4]	Richardson D, Nilsson J, Clarkson W A 2010 J. Opt. Soc. Am. B 27 63 Google Scholar
[5]	Eidam T, Wirth C, Jauregui C, Stutzki F, Jansen F, Otto H J, Schmidt O, Schreiber T, Limpert J, Tünnermann A 2011 Opt. Express 19 1321 Google Scholar
[6]	Smith A V, Smith J J 2011 Opt. Express 19 10180 Google Scholar
[7]	肖虎, 潘志勇, 陈子伦, 奚小明, 黄良金, 王蒙, 杨欢, 闫志平, 冷进勇, 王小林, 王泽锋, 周朴, 许晓军, 陈金宝 2022 中国激光 49 1616002 Xiao H, Pan Z Y, Chen Z L, Xi X M, Huang L J, Wang M, Yang H, Yan Z P, Leng J Y, Wang X L, Wang Z F, Zhou P, Xu X J, Chen J B 2022 Chin. J. Lasers 49 1616002
[8]	林傲祥, 肖起榕, 倪力, 李丹, 彭昆, 齐天澄, 俞娟, 田佳丁, 冷晓晓, 吴与伦, 王小龙, 王乐乐, 戴晓军, 向恒, 闫平, 巩马理 2021 中国激光 48 0916003 Lin A X, Xiao Q R, Ni L, Li D, Peng K, Qi T C, Yu J, Tian J D, Leng X X, Wu Y L, Wang X L, Wang L L, Dai X J, Xiang H, Yan P, Gong M L 2021 Chin. J. Lasers 48 0916003
[9]	李峰云, 黎玥, 宋华青, 衣永青, 楚秋慧, 张昊宇, 黄珊, 郭超, 舒强, 颜冬林, 陶汝茂, 黄智蒙, 庞璐, 沈一泽, 史仪, 高聪, 刘念, 贺红磊, 李雨薇, 刘玙, 吴文杰, 王旗华, 温静, 汪卓, 林宏奂, 王建军, 景峰 2021 中国激光 48 2116002 Li F Y, Li Y, Song H Q, Yi Y Q, Chu Q H, Zhang H Y, Huang S, Guo C, Shu Q, Yan D L, Tao R M, Huang Z M, Pang L, Shen Y Z, Shi Y, Gao C, Liu N, He H L, Li Y W, Liu Y, Wu W J, Wang Q H, Wen J, Wang Z, Lin H H, Wang J J, Jing F 2021 Chin. J. Lasers 48 2116002
[10]	Wang Y, Chen G, Li J 2018 High Power Laser Sci. Eng. 6 40 Google Scholar
[11]	郑也, 杨依枫, 赵翔, 公维超, 柏刚, 张璟璞, 刘恺, 陈晓龙, 赵纯, 漆云凤, 晋云霞, 何兵, 周军 2017 中国激光 44 0201002 Google Scholar Zheng Y, Yang Y F, Zhao X, Gong W C, Bai G, Zhang J P, Liu K, Chen X L, Zhao C, Qi Y F, Jin Y X, He B, Zhou J 2017 Chin. J. Lasers 44 0201002 Google Scholar
[12]	何旭宝, 奚小明, 张汉伟, 王小林, 许晓军 2021 激光与光电子学进展 58 0900004 Google Scholar He X B, Xi X M, Zhang H W, Wang X L, Xu X J 2021 Laser Optoelectron. Prog. 58 0900004 Google Scholar
[13]	穆让修, 张佳, 龙井宇, 李刚, 卜英华, 韩耀锋, 寿少峻 2022 应用光学 43 792 Google Scholar Mu R X, Zhang J, Long J Y, Li G, Bu Y H, Han Y F, Shou S J 2022 J. Appl. Opt. 43 792 Google Scholar
[14]	许晓军, 韩凯, 刘泽金, 王小林, 马阎星, 张烜喆, 宁禹, 周朴 2019 CN 105762632B Xu X J, Han K, Liu Z J, Wang X L, Ma Y X, Zhang X Z, Ning Y, Zhou P 2019 CN Patent 105762632B
[15]	Regelskis K, Hou K, Raciukaitis G, Galvanauskas A 2008 Conference on Lasers and Electro-Optic San Jose, USA, May 4–9, 2008 p1
[16]	Schmidt O, Wirth C, Nodop D, Limpert J, Schreiber T, Peschel T, Eberhardt R, Tünnermann A 2009 Opt. Express 17 22974 Google Scholar
[17]	Chen F, Ma J, Wei C, Zhu R, Zhou W, Yuan Q, Pan S, Zhang J, Yize W, Dou J 2017 Opt. Express 25 32783 Google Scholar
[18]	He X B, Xiao H, Ma P F, Zhang H W, Wang X L, Xu X J 2021 Infrared Laser Eng. 50 20200385 [何旭宝, 肖虎, 马鹏飞, 张汉伟, 王小林, 许晓军 2021 红外与激光工程 50 20200385 Google Scholar He X B, Xiao H, Ma P F, Zhang H W, Wang X L, Xu X J 2021 Infrared Laser Eng. 50 20200385 Google Scholar
[19]	Yang B L, Wang P, Zhang H W, Xi X M, Wang X L, Shi C, Xu X J, Chen J B 2022 Chin. J. Lasers 49 0816001 [杨保来, 王鹏, 张汉伟, 奚小明, 王小林, 史尘, 许晓军, 陈金宝 2022 中国激光 49 0816001 Yang B L, Wang P, Zhang H W, Xi X M, Wang X L, Shi C, Xu X J, Chen J B 2022 Chin. J. Lasers 49 0816001
[20]	Yang B L, Wang P, Zhang H W, Xi X M, Shi C, Wang X L, Xu X J 2021 Opt. Express 29 26366 Google Scholar

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