光纤激光器脉冲泵浦特性实验研究
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摘要
脉冲光纤激光器系统产生的放大自发辐射(ASE)是制约其峰值功率的重要因素,而脉冲泵浦是抑制脉冲光纤激光器脉冲自发辐射的有效方法。文章对掺镱双包层光纤放大器的脉冲泵浦特性进行了研究,设计了一种由信号源、隔离器、放大级和滤波器组成的实验光路。对于脉冲泵浦,放大器设计中需要确定的最主要因素是泵浦功率和泵浦脉宽,文章研究了单脉冲能量、ASE功率与泵浦功率以及泵浦脉宽之间的关系,所得结论对脉冲泵浦光纤放大器的设计具有一定的参考价值。
Amplified Spontaneous Emission(ASE)produced by pulsed fiber laser system is an important factor restricting the peak power.Pulsed pump is an effective method to suppress the ASE among the pulses of pulsed fiber lasers.The pulse pumping characteristics of Yb doped double clad fiber amplifier are experimentally studied in this paper.An experimental model consisting of a signal source,an isolator,an amplifier stage and a filter is designed.For the pulsed pump,the pump power and pump duration are two most important factors,which are required to be determined during amplifier design.In this paper,the relationship between pulse energy and ASE with pump power and duration is studied.The conclusions are valuable for the design of pulsed pump fiber amplifier.
Amplified Spontaneous Emission(ASE)produced by pulsed fiber laser system is an important factor restricting the peak power.Pulsed pump is an effective method to suppress the ASE among the pulses of pulsed fiber lasers.The pulse pumping characteristics of Yb doped double clad fiber amplifier are experimentally studied in this paper.An experimental model consisting of a signal source,an isolator,an amplifier stage and a filter is designed.For the pulsed pump,the pump power and pump duration are two most important factors,which are required to be determined during amplifier design.In this paper,the relationship between pulse energy and ASE with pump power and duration is studied.The conclusions are valuable for the design of pulsed pump fiber amplifier.
引文
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[5]刘庆.高功率大模场掺镱光纤放大器脉冲泵浦的研究[D].合肥:中国科学技术大学,2011.
[6]廖素英,巩马里.高功率光纤激光器和放大器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.
[7]陈圳,任海兰.MOPA结构脉冲光纤激光器输出特性的实验研究[J].光通信研究,2018,(3):52-54.
[8]陈吉欣,隋晨,陈福深,等.掺Yb3+双包层光纤激光器的热效应分析[J].激光技术,2006,30(3):268-270.
[9] Huang X J,Guo B L,Yang W K,et al.PulsedPumped Optical Fiber Amplifier[J].Chinese Optics Letters,2009,7(08):712-714.
[10]Zhang H,Shen X,Chen D,et al.High Energy and High Peak Power Nanosecond Pulses Generated by Fiber Amplifier[J].Photonics Technology Letters IEEE,2014,26(22):2295-2298.
[11]金亮.高峰值功率脉冲主振荡功率放大光纤激光系统关键技术研究[D].长春:长春理工大学,2015.
[2] Galvanauskas A,Cheng M Y,Hou K C,et al.High Peak Power Pulse Amplification in Large-Core YbDoped Fiber Amplifiers[J].IEEE Journal of Selected Topics in Quantum Electronics,2007,13(3):559-566.
[3] Zhu Z J,Xu L X,Mao Q H,et al.Photodarkening in Ytterbium-Doped Fiber with High Doping Concentration[J].Acta Photonica Sinica,2007,36(1):26-29.
[4] Guo Z C,Fu S G,Jia X J,et al.Experimental Study of Large-Mode-Area Fiber Amplifier Applied in Coherent Combination[J].Acta Photonica Sinica,2007,36(9):1660-1663.
[5]刘庆.高功率大模场掺镱光纤放大器脉冲泵浦的研究[D].合肥:中国科学技术大学,2011.
[6]廖素英,巩马里.高功率光纤激光器和放大器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.
[7]陈圳,任海兰.MOPA结构脉冲光纤激光器输出特性的实验研究[J].光通信研究,2018,(3):52-54.
[8]陈吉欣,隋晨,陈福深,等.掺Yb3+双包层光纤激光器的热效应分析[J].激光技术,2006,30(3):268-270.
[9] Huang X J,Guo B L,Yang W K,et al.PulsedPumped Optical Fiber Amplifier[J].Chinese Optics Letters,2009,7(08):712-714.
[10]Zhang H,Shen X,Chen D,et al.High Energy and High Peak Power Nanosecond Pulses Generated by Fiber Amplifier[J].Photonics Technology Letters IEEE,2014,26(22):2295-2298.
[11]金亮.高峰值功率脉冲主振荡功率放大光纤激光系统关键技术研究[D].长春:长春理工大学,2015.