基于Pi介子衰变-Markov模型的双色激光场仄秒脉冲测量  

Measurement of two-color laser pulses based on Pi meson decay Markov model

作　　者：伍佳 唐碧华 罗亚梅 WU Jia;TANG Bihua;LUO Yamei(College of Medical Information and Engineering,Southwest Medical University,Luzhou Sichuan 646000,China)

机构地区：[1]西南医科大学医学信息与工程学院,四川泸州646000

出　　处：《激光杂志》2020年第11期48-52,共5页Laser Journal

基　　金：西南医科大学应用基础研究项目(No.00030672)。

摘　　要：针对传统双色激光场仄秒脉冲测量方法脉冲平滑性能较差的问题,提出一种基于Pi介子衰变-Markov模型的双色激光场仄秒脉冲测量方法。获取仄秒脉冲的FROG谱图,提取仄秒脉冲信息,利用相位迭代算法获取仄秒脉冲的相位信息,利用脉冲整形系统对仄秒脉冲进行调制,将仄秒脉冲从时域转换至频域。根据Pi介子衰变-Markov模型,以调制的仄秒脉冲为基础,通过多次测量法完成仄秒脉冲脉宽的测量与形状的测量。对比试验表明,其脉冲平滑曲线与脉冲曲线的贴合度最高,两条曲线之间的最大误差为0.001,比3种文献方法的误差均值低0.059,该方法的脉冲平滑性能最好。Aiming at the problem of poor pulse smoothing performance of traditional two-color laser field pulse measurement method,a two-color laser field pulse measurement method based on Pi meson decay-Markov model is proposed.The pulse FROG spectrum is obtained,the pulse information is extracted,the phase iterative algorithm is used to obtain pulse phase information,the pulse shaping system is used to modulate pulse,and the pulse is converted from time domain to frequency domain.According to Pi meson decay-Markov model,based on modulated pulse,the measurement of the pulse width and the shape of the pulse are completed by multiple measurement methods.Comparative tests show that the pulse smoothing curve and the pulse curve have the highest degree of fit,and the maximum error between the two curves is 0.001,which is 0.059 lower than average error of three literature methods.

关 键 词：Pi介子衰变-Markov模型 双色激光场 仄秒脉冲测量 延迟变量 信号脉冲电场 脉冲整形系统 

分 类 号：TN239[电子电信—物理电子学]