LD泵浦高功率掺镱（Yb~（3+））双包层光纤激光器理论与实验研究
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摘要
激光二极管泵浦掺Yb~(3+)双包层光纤激光器及相关的理论和技术是目前光纤激光器领域的一个重要的研究方向。
本论文报告对LD泵浦的掺Yb~(3+)光纤激光器所做初步理论研究并得出实验研究结果,概述了目前双包层光纤激光器的分类及国内外研究情况;分析了双包层光纤激光器的基本结构和工作原理及Yb~(3+)独特的能级结构和光谱结构,并对Yb~(3+)准四能级特性以及强泵浦的掺Yb~(3+)的双包层光纤激光器进行了理论方面的研究,验证了阈值关系表达式和输出功率解析表达式。
本论文注重对双包层光纤激光器实验参数进行理论优化,分析不同泵浦功率下、激光输出功率与实验参数间的关系,综合分析得出实验中的最佳光纤长度和最佳后腔镜反射率。
本论文的实验部分采用典型F-P腔掺Yb~(3+)双包层光纤激光器的实验装置,对掺Yb~(3+)光纤激光器的输出特性进行了详细的实验研究,并在975nm激光二极管尾纤输出功率160W泵浦下,获得中心波长为1082.4nm、输出功率88W的激光、激光斜效率达到83%、光光转化效率为55%的实验结果。
The research of laser diode( LD) pumped Yb~(3+)-doped double-clad fiber lasers (DCFLs) is an important area of laser technology.
In this dissertation, the theoretical and experimental studies of Yb~(3+)-DCFLs are presented. Firstly, the historical developments,the new achievements of DCFLs are introduced. The basic structure and principle of fiber lasers,the specific energy levels and fluorescence spectrum of Yb~(3+)are discussed.
Secondly,the characteristics of quasi-four-level and the strongly pumped Yb~(3+)-DCFLs are investigated theoretically. The formulas of the threshold pump power and output power of Yb~(3+)-DCFLs have been obtained.
The experimental parameters of Yb~(3+)-DCFLs is studied using numerical calculation .It is shown the best parameters for high power fiber lasers, after analysis the relationship of output power with experimental parameters under different pump power.
Yb~(3+)-DCFLs with Fabry-Perot laser cavity are studied experimentally. The output laser power of 88W was obtained when the pump power from LD was 160 W. The slope efficiency and the optical to optical conversion efficiency are 83% and 55%, respectively.
本论文报告对LD泵浦的掺Yb~(3+)光纤激光器所做初步理论研究并得出实验研究结果,概述了目前双包层光纤激光器的分类及国内外研究情况;分析了双包层光纤激光器的基本结构和工作原理及Yb~(3+)独特的能级结构和光谱结构,并对Yb~(3+)准四能级特性以及强泵浦的掺Yb~(3+)的双包层光纤激光器进行了理论方面的研究,验证了阈值关系表达式和输出功率解析表达式。
本论文注重对双包层光纤激光器实验参数进行理论优化,分析不同泵浦功率下、激光输出功率与实验参数间的关系,综合分析得出实验中的最佳光纤长度和最佳后腔镜反射率。
本论文的实验部分采用典型F-P腔掺Yb~(3+)双包层光纤激光器的实验装置,对掺Yb~(3+)光纤激光器的输出特性进行了详细的实验研究,并在975nm激光二极管尾纤输出功率160W泵浦下,获得中心波长为1082.4nm、输出功率88W的激光、激光斜效率达到83%、光光转化效率为55%的实验结果。
The research of laser diode( LD) pumped Yb~(3+)-doped double-clad fiber lasers (DCFLs) is an important area of laser technology.
In this dissertation, the theoretical and experimental studies of Yb~(3+)-DCFLs are presented. Firstly, the historical developments,the new achievements of DCFLs are introduced. The basic structure and principle of fiber lasers,the specific energy levels and fluorescence spectrum of Yb~(3+)are discussed.
Secondly,the characteristics of quasi-four-level and the strongly pumped Yb~(3+)-DCFLs are investigated theoretically. The formulas of the threshold pump power and output power of Yb~(3+)-DCFLs have been obtained.
The experimental parameters of Yb~(3+)-DCFLs is studied using numerical calculation .It is shown the best parameters for high power fiber lasers, after analysis the relationship of output power with experimental parameters under different pump power.
Yb~(3+)-DCFLs with Fabry-Perot laser cavity are studied experimentally. The output laser power of 88W was obtained when the pump power from LD was 160 W. The slope efficiency and the optical to optical conversion efficiency are 83% and 55%, respectively.
引文
[1] 杨贵铣. 兴质量之基铸品牌之魂——烽火光纤李诗愈副总经理谈烽火品牌及光纤产业[J]. 激光与光电子学进展. 2006,(9):43.
[2] 海目公司. IPG高功率光纤激光器在岩石及泥土材料处理中的应用[J]. 光机电信息.2006,(7):36-37.
[3] S.B.Poole,D.N.Payne, M.E.Fermann. Fabrication of low-loss optical fibers containing rare-earth ions[J].Electron.Let.1985,21(17):737-738.
[4] 聂秋华. 光纤激光器和放大器技术[Z]. 电子工业出版社. 1997.
[5] 杨青,俞本立,甄胜来,孙志培,吴海滨. 光纤激光器的发展现状[J]. 光电子技术与信息. 2002, Vol.15 N.5.
[6] Th.Weber, W.Luthy, H.P.Wber, et al.. A longitudinal and side-pumped single transverse mode double-clad fiber laser with a special silicone coating[J].Optics Communications. 1995, 115:99-104.
[7] V.Gapontsev,W.Krupke. Fiber lasers grow in power[J]. Laser Focus World. 2002.38(8):83-87.
[8] 许兆文. 掺镱双包层光纤激光器的研究. 南开大学硕士毕业论文[D].2003,30-32.
[9] 苏红新,李乙钢,付成鹏等. LD包层抽运光纤激光器抽运方式的理论分析[J].光电子激光. 2001,12(9):910-912.
[10] H.S.Seo,D.I.Chang,Y.G.Choi,etc. Highly efficient single mode laser in Yb-doped double clad fiber with novel cavity design[C].OFC’2002,ThGG26.
[11] 梁兰菊,郑义,闫昕,刘群. LD泵浦掺镱的双包层光纤激光器的研究[J]. 激光杂志. 已录用.
[12] Yoonchan Jeong, J.K.Sahu , R.B.Williams , D.J.Richardson, K.Furusawa , J.Nilsson. Ytterbium-doped large-core fibre with 272w of output power[Z].
[13] M. Laroche,P.Jander,W.A.Clarkson,J.k.Sahu,J.nilsson and Y.Jeong. High power cladding-pumped tunable Er/Yb-doped fibre laser[J]. Electornics Letters.8th July 2004, Vol.40 No.14.
[14] J.Nilsson,W.A.Clarkson,R.Selvas,J.K.Sahu,P.W.Turner,S.U.Alam and A.B.Grudinin. High-power wavelength-tunable cladding-pumped rare-earth-doped silica fiber lasers [J].Optical Fiber Technology.2004,(10):5-30.
[15] D.Gaponstev. Quasi-single-mode fiber laser nears 2kW output with high-quality beam [J].Laser Focus World.2005, 41(6): 9.
[16] www. globalexecutiveforum. net/ more_photonics_News. Htm.
[17] Zhou Jun, Lou Qi-Hong, Zhu Jiang-Qiang et al. A continuous-wave 714W fiber laser withchina-made large-mode-area double-clad fiber. [J] Acta Optica Sinica (周军,楼祺洪,朱健强等人. 采用国产大模场面积双包层光纤的 714 W 连续光纤激光器. 光学学报). 2006, 26(7): 1119-1120.
[18] Li Cheng, Yan Ping, Chen gang et al. An output power over 700W fiber laser with china-made large-mode-area double-clad fiber [J]. Chinese J. Laser (李晨, 闫平, 陈刚等人. 采用国产掺镱双包层光纤的光纤激光器连续输出功率突破 700 W. 中国激光). 2006, 33: 7.
[19] 楼祺洪,周军等. 国产双包层掺镱光纤实现 440w 的连续高功率激光输出[J]. 中国激光2005,01.
[20] M.Etzel, H.W.Gandy,R.J.Ginther. Stimulated emission of infrared radiation from ytterbium-activated silicate glass [J]. Apple Opt, 1962. (1):534—536.
[21] C.Hanna,R .M .Percival,Perry I R, etc.An Ytterbium-doped monomode fiber laser: broadly tunable operation from 1.01um to 1.162um and three-level operation at 974 nm [J] . Journal of Modern Optics. 1990,37(4):517-525.
[22] R.Paschotta,J. Nilsson,P .R .Barber,J. E .Caplen,A .C .Tropper,and D .C .Hanna. Lifetime quenching in Yb3+ doped fibers [J]. Opt. Communication. 1997,136:375-378.
[23] 刘东峰,陈国夫,王贤华,阮灵. 掺Yb3+光纤激光器及放大器 [J]. 激光与红外. 1999,29(4):243–245.
[24] J.T.Kringlebotn,J.L .Archambault,et al. Er3+/Yb3+-doped fiber distributed-feedback laser [J]. Opt. Lett. 1994,19 (24):2101-2103.
[25] M.F.Digonnet.Theory of super fluorescent fiber lasers[J].Light wave Technology.1986, LT-4(11):16311633.
[2] 海目公司. IPG高功率光纤激光器在岩石及泥土材料处理中的应用[J]. 光机电信息.2006,(7):36-37.
[3] S.B.Poole,D.N.Payne, M.E.Fermann. Fabrication of low-loss optical fibers containing rare-earth ions[J].Electron.Let.1985,21(17):737-738.
[4] 聂秋华. 光纤激光器和放大器技术[Z]. 电子工业出版社. 1997.
[5] 杨青,俞本立,甄胜来,孙志培,吴海滨. 光纤激光器的发展现状[J]. 光电子技术与信息. 2002, Vol.15 N.5.
[6] Th.Weber, W.Luthy, H.P.Wber, et al.. A longitudinal and side-pumped single transverse mode double-clad fiber laser with a special silicone coating[J].Optics Communications. 1995, 115:99-104.
[7] V.Gapontsev,W.Krupke. Fiber lasers grow in power[J]. Laser Focus World. 2002.38(8):83-87.
[8] 许兆文. 掺镱双包层光纤激光器的研究. 南开大学硕士毕业论文[D].2003,30-32.
[9] 苏红新,李乙钢,付成鹏等. LD包层抽运光纤激光器抽运方式的理论分析[J].光电子激光. 2001,12(9):910-912.
[10] H.S.Seo,D.I.Chang,Y.G.Choi,etc. Highly efficient single mode laser in Yb-doped double clad fiber with novel cavity design[C].OFC’2002,ThGG26.
[11] 梁兰菊,郑义,闫昕,刘群. LD泵浦掺镱的双包层光纤激光器的研究[J]. 激光杂志. 已录用.
[12] Yoonchan Jeong, J.K.Sahu , R.B.Williams , D.J.Richardson, K.Furusawa , J.Nilsson. Ytterbium-doped large-core fibre with 272w of output power[Z].
[13] M. Laroche,P.Jander,W.A.Clarkson,J.k.Sahu,J.nilsson and Y.Jeong. High power cladding-pumped tunable Er/Yb-doped fibre laser[J]. Electornics Letters.8th July 2004, Vol.40 No.14.
[14] J.Nilsson,W.A.Clarkson,R.Selvas,J.K.Sahu,P.W.Turner,S.U.Alam and A.B.Grudinin. High-power wavelength-tunable cladding-pumped rare-earth-doped silica fiber lasers [J].Optical Fiber Technology.2004,(10):5-30.
[15] D.Gaponstev. Quasi-single-mode fiber laser nears 2kW output with high-quality beam [J].Laser Focus World.2005, 41(6): 9.
[16] www. globalexecutiveforum. net/ more_photonics_News. Htm.
[17] Zhou Jun, Lou Qi-Hong, Zhu Jiang-Qiang et al. A continuous-wave 714W fiber laser withchina-made large-mode-area double-clad fiber. [J] Acta Optica Sinica (周军,楼祺洪,朱健强等人. 采用国产大模场面积双包层光纤的 714 W 连续光纤激光器. 光学学报). 2006, 26(7): 1119-1120.
[18] Li Cheng, Yan Ping, Chen gang et al. An output power over 700W fiber laser with china-made large-mode-area double-clad fiber [J]. Chinese J. Laser (李晨, 闫平, 陈刚等人. 采用国产掺镱双包层光纤的光纤激光器连续输出功率突破 700 W. 中国激光). 2006, 33: 7.
[19] 楼祺洪,周军等. 国产双包层掺镱光纤实现 440w 的连续高功率激光输出[J]. 中国激光2005,01.
[20] M.Etzel, H.W.Gandy,R.J.Ginther. Stimulated emission of infrared radiation from ytterbium-activated silicate glass [J]. Apple Opt, 1962. (1):534—536.
[21] C.Hanna,R .M .Percival,Perry I R, etc.An Ytterbium-doped monomode fiber laser: broadly tunable operation from 1.01um to 1.162um and three-level operation at 974 nm [J] . Journal of Modern Optics. 1990,37(4):517-525.
[22] R.Paschotta,J. Nilsson,P .R .Barber,J. E .Caplen,A .C .Tropper,and D .C .Hanna. Lifetime quenching in Yb3+ doped fibers [J]. Opt. Communication. 1997,136:375-378.
[23] 刘东峰,陈国夫,王贤华,阮灵. 掺Yb3+光纤激光器及放大器 [J]. 激光与红外. 1999,29(4):243–245.
[24] J.T.Kringlebotn,J.L .Archambault,et al. Er3+/Yb3+-doped fiber distributed-feedback laser [J]. Opt. Lett. 1994,19 (24):2101-2103.
[25] M.F.Digonnet.Theory of super fluorescent fiber lasers[J].Light wave Technology.1986, LT-4(11):16311633.