激光清洗用高功率纳秒脉冲掺镱光纤激光器
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摘要
研制了激光清洗用高能量纳秒脉冲掺镱光纤激光器,该激光器采用主动调Q技术产生纳秒脉冲,脉冲经两级主振荡功率放大器(MOPA)后可以获得高的能量和平均功率。在重复频率为100kHz时,激光器输出的平均功率最高可达302W,脉冲宽度为203ns,单脉冲能量为3mJ,光光转换效率为84%。利用该激光器进行了激光除锈实验,实验结果证明该激光器稳定可靠,可满足激光除锈、激光除漆等多种应用的需求。
High energy nanosecond pulsed ytterbium-doped fiber laser is developed.The laser utilizes active Qswitching technology to generate nanosecond pulses,and the pulses can obtain high energy and average power after it passes through two-stage master oscillator power amplifier(MOPA)system.When the pulse repetition frequency is 100 kHz,the maximum average power of laser pulses is 302 W,pulse duration is 203 ns,single pulse energy is 3 mJ and the optical-to-optical conversion efficiency is 84%.Laser rust removal experiment is carried out using the laser,the experimental results show that the laser is stability,and the laser can meet the laser rust removal,laser paint removel and many other applications.
High energy nanosecond pulsed ytterbium-doped fiber laser is developed.The laser utilizes active Qswitching technology to generate nanosecond pulses,and the pulses can obtain high energy and average power after it passes through two-stage master oscillator power amplifier(MOPA)system.When the pulse repetition frequency is 100 kHz,the maximum average power of laser pulses is 302 W,pulse duration is 203 ns,single pulse energy is 3 mJ and the optical-to-optical conversion efficiency is 84%.Laser rust removal experiment is carried out using the laser,the experimental results show that the laser is stability,and the laser can meet the laser rust removal,laser paint removel and many other applications.
引文
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[9]Zhao D,Yan F P,Liu S,et al.Analysis of the characteristics of the thulium doped fiber amplifier for dual-single-frequency amplification[J].Navigation and Control,2017,16(1):57-63.赵丹,延凤平,刘硕,等.掺铥光纤放大器对双单频激光放大的特性分析[J].导航与控制,2017,16(1):57-63.
[10]Maryashin S,Unt A,Gapontsev V P.10-mJ pulse energy and 200Waverage power Yb-doped fiber laser[C].Proceedings of SPIE,2006,6102:61020O.
[11]Li W X,Hao Q,Yan M,et al.Tunable flat-top nanosecond fiber laser oscillator and 280 W average power nanosecond Yb-doped fiber amplifier[J].Optics Express,2009,17(12):10113-10118.
[12]Su R T,Zhou P,Wang X L,et al.Single-frequency nanosecond pulsed laser with output power of 300 Win all-fiber format[J].High Power Laser and Particle Beams,2012,24(5):1009-1010.粟荣涛,周朴,王小林,等.单频纳秒脉冲全光纤激光器实现300 W平均功率输出[J].强激光与粒子束,2012,24(5):1009-1010.
[13]Huang L J,Sun H Y,Leng J Y,et al.736 Waverage power all-fiber nanosecond MOPA based on ultra-low NA Ytterbium doped fiber[C].Advanced Solid State Lasers,2015:AM5A.50.
[2]Zhang H,Liu W W,Dong Y Z,et al.Experimental and mechanism research on paint removal with low frequency YAG pulsed laser[J].Laser&Optoelectronics Progress,2013,50(12):121401.章恒,刘伟嵬,董亚洲,等.低频YAG脉冲激光除漆机理和实验研究[J].激光与光电子学进展,2013,50(12):121401.
[3]Wang D L,Feng G Y,Deng G L,et al.Study of mechanism on laser paint removal based on the morphology and element composition of ejected particle[J].Chinese Journal of Lasers,2015,42(10):1003007.王德良,冯国英,邓国亮,等.基于颗粒形貌及成分分析的激光除漆去除机理研究[J].中国激光,2015,42(10):1003007.
[4]Oujja M,Sanz M,Rebollar E,et al.Wavelength and pulse duration effects on laser induced changes on raw pigments used in paintings[J].Spectrochimica Acta Part A:Molecular and Biomolecular Spectroscopy,2013,102:7-14.
[5]Villarreal-Villela A E,Cabrera L P.Monitoring the laser ablation process of paint layers by PILAtechnique[J].Open Journal of Applied Sciences,2016,6(9):626-635.
[6]Pouli P,Oujja M,Castillejo M.Practical issues in laser cleaning of stone and painted artefacts:optimisation procedures and side effects[J].Applied Physics A,2012,106(2):447-464.
[7]Madhukar Y K,Mullick S,Shukla D K,et al.Effect of laser operating mode in paint removal with a fiber laser[J].Applied Surface Science,2013,264:892-901.
[8]Yin Z,Yan F P,Liu S,et al.Research of stimulated Brillouin scattering effect in 2μm band singlefrequency Raman fiber amplifier[J].Navigation and Control,2015,14(1):100-105.尹智,延凤平,刘硕,等.2μm波段单频拉曼光纤放大器中受激布里渊散射研究[J].导航与控制,2015,14(1):100-105.
[9]Zhao D,Yan F P,Liu S,et al.Analysis of the characteristics of the thulium doped fiber amplifier for dual-single-frequency amplification[J].Navigation and Control,2017,16(1):57-63.赵丹,延凤平,刘硕,等.掺铥光纤放大器对双单频激光放大的特性分析[J].导航与控制,2017,16(1):57-63.
[10]Maryashin S,Unt A,Gapontsev V P.10-mJ pulse energy and 200Waverage power Yb-doped fiber laser[C].Proceedings of SPIE,2006,6102:61020O.
[11]Li W X,Hao Q,Yan M,et al.Tunable flat-top nanosecond fiber laser oscillator and 280 W average power nanosecond Yb-doped fiber amplifier[J].Optics Express,2009,17(12):10113-10118.
[12]Su R T,Zhou P,Wang X L,et al.Single-frequency nanosecond pulsed laser with output power of 300 Win all-fiber format[J].High Power Laser and Particle Beams,2012,24(5):1009-1010.粟荣涛,周朴,王小林,等.单频纳秒脉冲全光纤激光器实现300 W平均功率输出[J].强激光与粒子束,2012,24(5):1009-1010.
[13]Huang L J,Sun H Y,Leng J Y,et al.736 Waverage power all-fiber nanosecond MOPA based on ultra-low NA Ytterbium doped fiber[C].Advanced Solid State Lasers,2015:AM5A.50.