国产30/400μm光纤放大器中模式不稳定现象的实验研究
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- 论文作者：柏刚 ; 沈辉 ; 陈晓龙 ; 赵翔 ; 漆云凤 ; 何兵 ; 周军
- 年：2016
- 作者机构：中国科学院上海光学精密机械研究所上海市全固态激光器与应用技术重点实验室;中国科学院大学;南京先进激光技术研究院;南京中科神光科技有限公司;
- 论文关键词：光纤放大器 ; 模式不稳定 ; 热效应
- 会议召开时间：2016-12-06
- 会议录名称：2016年红外、遥感技术与应用研讨会暨交叉学科论坛论文集
- 语种：中文
- 分类号：TN722
- 学会代码：SHHH
- 会议名称：2016年红外、遥感技术与应用研讨会暨交叉学科论坛
- 会议地点：中国江苏常州
- 主办单位：上海市红外与遥感学会、上海市传感技术学会、中国科学院上海技术物理研究所
- 学会名称：上海市红外与遥感学会
- 页数：5
- 文件大小：376k
- 原文格式：D
- 会议级别：地方
摘要
模式不稳定是指高功率光纤激光随着输出功率提升发生的模式突变,会导致光束质量下降,限制了衍射极限光纤激光输出功率的提升。本文研究了全光纤结构MOPA放大器中的模式不稳定现象,对于国产30/400μm阶跃折射率大模场双包层掺镱光纤,前级注入种子功率在30W左右时,实验测得模式不稳定的阈值功率在214W左右。对比理论计算的结果表明,热效应是模式不稳定现象发生的根源,级联的热积累过程会大大降低模式不稳定发生的阈值。
引文
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2.代守军,何兵,周军,等.高功率散热技术及高功率光纤激光放大器[J].中国激光,2003,40(5):0502003.
3.D J Richardson,J Nilsson,W A Clarkson.High power fiber lasers:current status and future perspectives[J].J Opt Soc Am B,2010,27(11):B63-B92.
4.廖素英,巩马理.高功率光纤激器和放大的非线性效应管理新进展[J].激光与光电子学进展,2007,44(6):27-33.
5.C Jauregui,T Eidam,J Otto Hans,et al..Physical origin of mode instabilities in high-power fiber laser[J].Opt Express,2012,20(12):12912-12925.
6.T Eidam,S Hanf,E Seise,et al..Femtosecond fiber CPA system emitting 830W average output power[J].Opt Lett,2010,35(2):94-96.
7.T.Eidam,C.Wirth,C.Jauregui,et al..Experimental observations of the threshold-like onset of mode instabilities in high power fiber amplifiers,Opt.Express,2011,19(14),13218-13224.
8.F.Stutzki,H.-J.Otto,F.Jansen,et al..High-speed modal decomposition of mode instabilities in high-power fiber lasers,Opt.Lett.2011,36(23),4572-4574.
9.Marko Laurila,Mette M.J?rgensen,et al..Distributed mode filtering rod fiber amplifier delivering292W with improved mode stability[J].Opt.Express,2012,20(5),15710-15722.
10.H-J Otto,F Stutzki,F Jansen,et al..Temporal dynamics of mode-instabilities in high power fiber lasers and amplifiers[J].Opt.Express,2012,20(14),5742-5753.
11.K R Hansen,T T Alkeskjold,J Broeng,et al..Theoretical analysis of mode instability in high-power fiber amplifier[J],Opt Express,2013,21(2):1944-1971.
12.K R Hansen,T T Alkeskjold,J Broeng,et al..Thermally induced mode coupling in rare-earth doped fiber amplifiers[J].Opt Lett,2012,37(12):2382-2384.