基于波分复用思想的啁啾脉冲堆积方法
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摘要
利用传统的脉冲堆积方法进行脉冲整形时,由于拍频效应会使得堆积出来的整形脉冲出现强度起伏,由于光谱干涉效应会使得堆积出来的脉冲光谱出现强度起伏。针对上述问题,提出了一种基于波分复用思想的啁啾脉冲堆积脉冲整形方法。利用该方法对啁啾脉冲堆积脉冲整形问题展开了理论分析与数值模拟,并将结果与传统的啁啾脉冲堆积脉冲整形技术进行了对比。结果表明,基于波分复用思想的啁啾脉冲堆积脉冲整形方法可以有效地降低拍频效应,得到更为平滑的整形脉冲;且波长间隔越大,脉冲平滑效果就越好。另外,基于波分复用思想的啁啾脉冲堆积脉冲整形方法还可以有效地降低或消除频谱干涉效应。
For the case of pulse shaping by the usual pulse stacking scheme,the beat effect brings intensity fluctuation to the shaped pulse,and the spectrum interference effect will cause intensity fluctuation of the spectrum of the shaped pulse.To solve these problems,a pulse stacking scheme based on the wavelength division multiplexing(WDM) is proposed.Theoretical analysis and numerical simulation are developed on this scheme and this scheme is compared with the usual pulse stacking scheme.The results show that the pulse stacking scheme based on WDM can reduce the beat effect effectively,and smoother shaped pulse can be obtained.The larger the wavelength spacings are,the smoother shaped pulse we can get.Otherwise,this scheme can also reduce or eliminate the spectrum interference effect.
For the case of pulse shaping by the usual pulse stacking scheme,the beat effect brings intensity fluctuation to the shaped pulse,and the spectrum interference effect will cause intensity fluctuation of the spectrum of the shaped pulse.To solve these problems,a pulse stacking scheme based on the wavelength division multiplexing(WDM) is proposed.Theoretical analysis and numerical simulation are developed on this scheme and this scheme is compared with the usual pulse stacking scheme.The results show that the pulse stacking scheme based on WDM can reduce the beat effect effectively,and smoother shaped pulse can be obtained.The larger the wavelength spacings are,the smoother shaped pulse we can get.Otherwise,this scheme can also reduce or eliminate the spectrum interference effect.
引文
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2A.M.Weiner.Femtosecond pulse shaping using spatial lightmodulators[J].Rev.Sci.Instrum.,2000,71(5):1929～1960
3Cao Dingxiang,Zhang Xiongjun,Zheng Wanguo et al..Thermaldistortion and birefringence in repetition-rate plasma electrodePockels cell for high average power[J].Chin.Opt.Lett.,2007,5(5):292～1294
4Wang Chun,Chen Shaohe,Ma Zhonglin et al..The realizationof the arbitrary shaping of the laser pulse by the integrated opticalmodulator in the ICF solid-state laser driverⅡ.the integratedoptical modulator[J].Chinese J.Quantum Electronics,2001,18(6):530～534王春,陈绍和,马忠林等.利用集成光学调制器实现ICF固体激光驱动器中激光脉冲任意整形Ⅱ.集成光学调制器[J].量子电子学报,2001,18(6):530～534
5Ji Fan,Sui Zhan,Li Fenget al..Analysis of pulse smoothing bymulti-pulse interference in time domain[J].High Power Laserand Particle Beams,2006,18(3):401～404纪帆,隋展,李锋等.时域延时多脉冲叠加平滑过程的分析[J].强激光与粒子束,2006,18(3):401～404
6M.Nakat suka,N.Miyanaga,T.Kanabe et al..Partiallycoherent light source for ICF experiment[C].SPIE,1993,1870:151～162
7S.Matsuoka,N.Miyanaga,A.Ando et al..Flexible pulseshaping of partially coherent light on GEKKOⅫ[C].SPIE,1995,2633:627～633
8Hu Zhengliang,Hu Yongming,Zhao Minghui et al..Analysisand simulation of optical fiber pulse stacker[J].Acta PhotonicaSinica,2006,35(7):966～969胡正良,胡永明,赵明辉等.光纤脉冲堆积器的模拟分析[J].光子学报,2006,35(7):966～969
9Lin Honghuan,Sui Zhan,Wang Jianjun et al..Optical pulseshaping by chirped pulse stacking[J].Acta Optica Sinica,2007,27(3):466～470林宏奂,隋展,王建军等.啁啾脉冲堆积用于光脉冲整形[J].光学学报,2007,27(3):466～470
10Zeng Shuguang,Zhang Bin.Inverse problem of pulse shaping bypulse stacking[J].Acta Optica Sinica,2008,28(12):2272～2276曾曙光,张彬.脉冲堆积方式产生整形脉冲的逆问题[J].光学学报,2008,28(12):2272～2276
11M.Born,E.Wolf.Principles of Optics[M].Cambridge:Cambridge University Press,1999
12Yang Xianglin.Optical Fiber Communication System[M].Beijing:National Defense Industry Press,2000杨祥林.光纤通信系统[M].北京:国防工业出版社,2000
13Lu Huaiwei,Wei Yun,Wu Kaijun et al..Design of all-fiberasymmetric interleaver with 2×2and 3×3fiber couplers[J].Acta Optica Sinica,2011,31(11):1106002鲁怀伟,魏赟,邬开俊等.基于3×3和2×2光纤耦合器的全光纤不等带宽梳状滤波器的设计[J].光学学报,2011,31(11):1106002
14Yu Kuanglu,Wu Chongqing,Guo Xuan et al..A novel multi-point fiber optics acetylene sensing system based on densewavelength division multiplexers[J].Acta Optica Sinica,2011,31(5):0506003余贶琭,吴重庆,郭旋等.基于波分复用的多点光纤乙炔传感系统[J].光学学报,2011,31(5):0506003