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1 kW单端抽运、高光束质量、高稳定性全光纤激光振荡器

1 Kilowatt Single-End Pumped All-Fiber Laser Oscillator with Good Beam Quality and High Stability

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摘要

与光纤放大器相比,光纤激光振荡器具有结构紧凑、稳定性好、模式不稳定性阈值高、光束质量优良等优点。对单端抽运的1 kW级全光纤激光振荡器进行了详细的理论和实验研究。建立了考虑光纤弯曲、模式耦合、抽运波长变化、包层光滤除的速率方程模型;利用国产合束器,搭建了单端抽运全光纤振荡器,在抽运功率为1.5 kW时,获得1.04 kW功率输出,光光效率为69%。对不同输出功率的光束质量进行测量,光束质量M2均小于1.25。激光器稳定工作1 h,功率起伏小于1%。

Abstract

Compared with fiber amplifier, fiber laser oscillator has the advantages of compact structure, good stability, high threshold of mode instability and good beam quality. Single-end pumped 1 kW all fiber laser oscillator is studied in detail theoretically and experimentally. Rate equation model which considers the fiber bending loss, mode coupling, changing pumping wave and cladding lights stripping is presented. Using a China made combiner, a single-end pumped all fiber laser oscillator is built. Laser power of 1.04 kW and optical to optical efficiency of 69% are obtained when the pump power reaches to 1.5 kW. The beam quality is measured and the results show that the M2 factors are all less than 1.25 in different powers. With one hour steady laser operation, the power fluctuation is less then 1%.

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中图分类号:O436

所属栏目:光通信

基金项目:国防科技大学校科研项目(JC12-17-03)、湖南省教育厅科学研究项目(YB2013B003)

收稿日期:2014-01-15

修改稿日期:2014-03-10

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作者单位    点击查看

王小林:国防科学技术大学光电科学与工程学院, 湖南 长沙 410073
陶汝茂:国防科学技术大学光电科学与工程学院, 湖南 长沙 410073
张汉伟:国防科学技术大学光电科学与工程学院, 湖南 长沙 410073
周朴:国防科学技术大学光电科学与工程学院, 湖南 长沙 410073
许晓军:国防科学技术大学光电科学与工程学院, 湖南 长沙 410073

联系人作者:王小林(wxllin@nudt.edu.cn)

备注:王小林(1985—),男,讲师,主要从事光纤激光器及相干合成等方面的研究。

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引用该论文

Wang Xiaolin,Tao Rumao,Zhang Hanwei,Zhou Pu,Xu Xiaojun. 1 Kilowatt Single-End Pumped All-Fiber Laser Oscillator with Good Beam Quality and High Stability[J]. Chinese Journal of Lasers, 2014, 41(11): 1105001

王小林,陶汝茂,张汉伟,周朴,许晓军. 1 kW单端抽运、高光束质量、高稳定性全光纤激光振荡器[J]. 中国激光, 2014, 41(11): 1105001

被引情况

【1】刘李辉,龙吟,曹芬,刘文智,房勇,刘文广. 4臂边缘驱动变形镜校正低阶像差的仿真计算. 中国激光, 2015, 42(10): 1012001--1

【2】黄智蒙,唐选,刘仓理,李剑峰,张大勇,王小军,韩梅. 倾斜相差对大阵列光纤相干合成的影响与分析. 中国激光, 2015, 42(11): 1102003--1

【3】潘孙强,赵智刚,刘崇,葛剑虹,项震. 激光振荡器内光束质量演变的机理研究. 激光与光电子学进展, 2015, 52(11): 111406--1

【4】魏守宇,金东臣,孙若愚,曹镱,侯玉斌,王静,刘江,王璞. 基于高功率窄线宽掺镱全光纤超荧光源的光谱合束. 中国激光, 2016, 43(4): 402005--1

【5】刘超平,廖雷,李进延. 掺镱光纤激光器光子暗化现象的研究进展. 激光与光电子学进展, 2016, 53(7): 70002--1

【6】周子超,王小林,粟荣涛,张汉伟,周朴,许晓军. 梯度掺杂增益光纤SBS效应抑制的理论研究. 激光与光电子学进展, 2016, 53(7): 70604--1

【7】周子超,王小林,张汉伟,粟荣涛,韩 凯,周 朴,许晓军. 基于分布式传感的全光纤放大器增益光纤纤芯温度测量. 中国激光, 2017, 44(2): 201013--1

【8】王小林,吕品,张汉伟,谭姝丹,肖虎,段磊,宋云波,陶汝茂,史尘,周宇峰,马鹏飞,粟荣涛,周朴,许晓军,徐帆江. 光纤激光仿真软件See Fiber Laser与光纤激光工具集SFTool. 中国激光, 2017, 44(5): 506002--1

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