基于自聚焦透镜耦合光纤取样的高功率激光装置调频脉冲时间波形测量技术
|
摘要
提出了一种基于自聚焦透镜耦合单模光纤测量调频小宽带脉冲时间波形的技术方案。理论分析和实验结果表明:自聚焦透镜耦合光纤的取样能量随透镜与光束夹角增大而减小,但同一角度下各级次光谱耦合效率一致,取样过程不会引入附加的调频-调幅(FM-AM)效应,耦合效率下降一半时允许的光束角漂量为1mrad。该技术方案除具有便于集成、低成本、抗光束扰动能力和电磁干扰能力强等优点外,还通过自聚焦透镜扩大了取样面积,有效提高了取样能量,并抑制了光束截面能量起伏对测量系统的不良影响。该技术方案为高功率激光装置脉冲波形测量技术的改进研究提供了一定的理论和实验基础。
In this paper,apulse temporal profile measurement scheme based on self-focusing lens coupling of singlemode optical fiber for small broadband frequency modulation pulse is introduced.Theoretical analysis and experimental results show that sampling energy with self-focusing lens coupling fiber decreases with the increase of the angle between lens and beam,but spectrum coupling efficiency of different orders is the same at the same angle.It means that the process of sampling will not introduce additional frequency modulation leading to amplitude modulation(FM-AM)effect.When the coupling efficiency drops in a half,the allowable drift angle of beam is1 mrad.The technique scheme has advantages such as convenient to integrating,low cost and resistant to beam disturbance and electromagnetic interference.Besides,the sampling area has been expanded through the self-focusing lens that effectively improves the sampling energy and suppresses the adverse impact of beam cross section energy ups and downs on the measurement system.The technical scheme provides a certain theoretical and experimental basis for the improvement research of high power laser facility temporal profile measurement technology.
In this paper,apulse temporal profile measurement scheme based on self-focusing lens coupling of singlemode optical fiber for small broadband frequency modulation pulse is introduced.Theoretical analysis and experimental results show that sampling energy with self-focusing lens coupling fiber decreases with the increase of the angle between lens and beam,but spectrum coupling efficiency of different orders is the same at the same angle.It means that the process of sampling will not introduce additional frequency modulation leading to amplitude modulation(FM-AM)effect.When the coupling efficiency drops in a half,the allowable drift angle of beam is1 mrad.The technique scheme has advantages such as convenient to integrating,low cost and resistant to beam disturbance and electromagnetic interference.Besides,the sampling area has been expanded through the self-focusing lens that effectively improves the sampling energy and suppresses the adverse impact of beam cross section energy ups and downs on the measurement system.The technical scheme provides a certain theoretical and experimental basis for the improvement research of high power laser facility temporal profile measurement technology.
引文
[1]Glenzer S,Jones O,Speck D R,et al.3ωpower balance procedure on the NIF[R].UCRL-ID-142777,2001:1-10.
[2]Sun Zhihong,Wang Wenyi,Li Hua,et al.The technology of power balance measurement of multi-beam laser[J].Chinese J Lasers,2009,36(6):1493-1497.孙志红,王文义,刘华,等.多路激光功率平衡测量技术研究[J].中国激光,2009,36(6):1493-1497.
[3]Li Hai,Liang Yue,Zhao Runchang,et al.Waveform control technique of high power laser pulse shaping[J].High Power Laser and Particle Beams,2011,23(9):2377-2380.李海,梁樾,赵润昌,等.高功率激光整形脉冲波形控制技术[J].强激光与粒子束,2011,23(9):2377-2380.
[4]Zhao Dongfeng,Wang Li,Lin Zunqi,et al.Experimental study of 351nm propagation with high fluence on No.9system of SG-II laser facility[J].Chinese J Lasers,2011,38(7):0702001.赵东峰,王利,林尊琪,等.在神光II装置第九路系统开展351nm波长激光高通量传输的实验研究[J].中国激光,2011,38(7):0702001.
[5]Lindl J D,Amendt P,Berger R L,et al.The physics basis for ignition using indirect-drive targets on the National Ignition Facility[J].Physics of Plasmas,2004,11(2):339-491.
[6]Hüller S,Porzio A,Robiche J.Order statistics of high-intensity speckles in stimulated Brillouin scattering and plasmainduced laser beam smoothing[J].New Journal of Physics,2013,15(2):025003.
[7]Cao Tingfen,Xiong Zhao,Li Keyu,et al.Research on precise alignment for transport system installation of shenguang-Ⅲlaser driver[J].Laser&Optoelectronics Progress,2016,53(11):112201.曹庭分,熊召,李恪宇,等.神光-Ⅲ主机装置光传输系统安装精度准直技术研究[J].激光与光电子学进展,2016,53(11):112201.
[8]Lei Yu,Tong Qing,Zhang Xinyu.Liquid crystal microlens array for dual model imaging[J].Acta Optica Sinica,2016,36(5):0511004.雷宇,佟庆,张新宇.基于双模成像的液晶微透镜阵列[J].光学学报,2016,36(5):0511004.
[9]Sun Zhihong,Dong Jun,Xia Yanwen,et al.Temporal profile measurement of frequency modulation beams for high power laser facility[J].Chinese J Lasers,2013,40(11):1102009.孙志红,董军,夏彦文,等.高功率激光装置调频脉冲时间波形测试技术研究[J].中国激光,2013,40(11):1102009.
[10]Lu Zonggui,Xia Yanwen,Tang Jun,et al.Pulse-shape measurement technology for multi-beams infrared laser[J].Infrared and Laser Engineering,2011,40(6):1129-1132.卢宗贵,夏彦文,唐军,等.多路红外激光脉冲波形测量技术[J].红外与激光工程,2011,40(6):1129-1132.
[11]Xia Yanwen,Sun Zhihong,Zhao Runchuang,et al.Improvement of infrared temporal profile measurement system for SG-Ⅲprototype laser facility[J].Infrared and Laser Engineering,2012,40(6):1453-1457.夏彦文,孙志红,赵润昌,等.神光Ⅲ原型装置红外脉冲波形测量系统的研究[J].红外与激光工程,2012,40(6):1453-1457.
[12]Tian Xiaocheng,Zhang Kun,Zhu Na,et al.Research on linear chirped pulse generated by direct phase modulation[J].Chinese J Lasers,2015,42(3):0302002.田小程,张崑,朱娜,等.直接相位调制产生线性啁啾脉冲特性研究[J].中国激光,2015,42(3):0302002.
[13]Liao Bo.Theoreticalstudy of FM to AM issue on ICF facility[D].Shanghai:Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,2006:50-51.廖波.高功率激光装置中幅度调制效应的研究[D].上海:中国科学院上海光学精密机械研究所,2006:50-51.
[14]Goodman J W.Introduction to Fourier optics[M].New York:McGraw-Hill,1996.
[15]Hirooka T,Hori Y,Nakazawa M.Gaussian and sech approximations of mode field profiles in photonic crystal fibers[J].IEEE Photonics Techonol Lett,2004,16(4):1071-1073.
[16]Chen Xuekun,Zhang Lu,Wu Zhiyong,et al.Coupling efficiency of free-space laser coupling into single mode fiber and photonic crystal fiber[J].Chinese Optics,2013,6(2):208-215.陈雪坤,张璐,吴志勇,等.空间激光与单模光纤和光子晶体光纤的耦合效率[J].中国光学,2013,6(2):208-215.
[2]Sun Zhihong,Wang Wenyi,Li Hua,et al.The technology of power balance measurement of multi-beam laser[J].Chinese J Lasers,2009,36(6):1493-1497.孙志红,王文义,刘华,等.多路激光功率平衡测量技术研究[J].中国激光,2009,36(6):1493-1497.
[3]Li Hai,Liang Yue,Zhao Runchang,et al.Waveform control technique of high power laser pulse shaping[J].High Power Laser and Particle Beams,2011,23(9):2377-2380.李海,梁樾,赵润昌,等.高功率激光整形脉冲波形控制技术[J].强激光与粒子束,2011,23(9):2377-2380.
[4]Zhao Dongfeng,Wang Li,Lin Zunqi,et al.Experimental study of 351nm propagation with high fluence on No.9system of SG-II laser facility[J].Chinese J Lasers,2011,38(7):0702001.赵东峰,王利,林尊琪,等.在神光II装置第九路系统开展351nm波长激光高通量传输的实验研究[J].中国激光,2011,38(7):0702001.
[5]Lindl J D,Amendt P,Berger R L,et al.The physics basis for ignition using indirect-drive targets on the National Ignition Facility[J].Physics of Plasmas,2004,11(2):339-491.
[6]Hüller S,Porzio A,Robiche J.Order statistics of high-intensity speckles in stimulated Brillouin scattering and plasmainduced laser beam smoothing[J].New Journal of Physics,2013,15(2):025003.
[7]Cao Tingfen,Xiong Zhao,Li Keyu,et al.Research on precise alignment for transport system installation of shenguang-Ⅲlaser driver[J].Laser&Optoelectronics Progress,2016,53(11):112201.曹庭分,熊召,李恪宇,等.神光-Ⅲ主机装置光传输系统安装精度准直技术研究[J].激光与光电子学进展,2016,53(11):112201.
[8]Lei Yu,Tong Qing,Zhang Xinyu.Liquid crystal microlens array for dual model imaging[J].Acta Optica Sinica,2016,36(5):0511004.雷宇,佟庆,张新宇.基于双模成像的液晶微透镜阵列[J].光学学报,2016,36(5):0511004.
[9]Sun Zhihong,Dong Jun,Xia Yanwen,et al.Temporal profile measurement of frequency modulation beams for high power laser facility[J].Chinese J Lasers,2013,40(11):1102009.孙志红,董军,夏彦文,等.高功率激光装置调频脉冲时间波形测试技术研究[J].中国激光,2013,40(11):1102009.
[10]Lu Zonggui,Xia Yanwen,Tang Jun,et al.Pulse-shape measurement technology for multi-beams infrared laser[J].Infrared and Laser Engineering,2011,40(6):1129-1132.卢宗贵,夏彦文,唐军,等.多路红外激光脉冲波形测量技术[J].红外与激光工程,2011,40(6):1129-1132.
[11]Xia Yanwen,Sun Zhihong,Zhao Runchuang,et al.Improvement of infrared temporal profile measurement system for SG-Ⅲprototype laser facility[J].Infrared and Laser Engineering,2012,40(6):1453-1457.夏彦文,孙志红,赵润昌,等.神光Ⅲ原型装置红外脉冲波形测量系统的研究[J].红外与激光工程,2012,40(6):1453-1457.
[12]Tian Xiaocheng,Zhang Kun,Zhu Na,et al.Research on linear chirped pulse generated by direct phase modulation[J].Chinese J Lasers,2015,42(3):0302002.田小程,张崑,朱娜,等.直接相位调制产生线性啁啾脉冲特性研究[J].中国激光,2015,42(3):0302002.
[13]Liao Bo.Theoreticalstudy of FM to AM issue on ICF facility[D].Shanghai:Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,2006:50-51.廖波.高功率激光装置中幅度调制效应的研究[D].上海:中国科学院上海光学精密机械研究所,2006:50-51.
[14]Goodman J W.Introduction to Fourier optics[M].New York:McGraw-Hill,1996.
[15]Hirooka T,Hori Y,Nakazawa M.Gaussian and sech approximations of mode field profiles in photonic crystal fibers[J].IEEE Photonics Techonol Lett,2004,16(4):1071-1073.
[16]Chen Xuekun,Zhang Lu,Wu Zhiyong,et al.Coupling efficiency of free-space laser coupling into single mode fiber and photonic crystal fiber[J].Chinese Optics,2013,6(2):208-215.陈雪坤,张璐,吴志勇,等.空间激光与单模光纤和光子晶体光纤的耦合效率[J].中国光学,2013,6(2):208-215.