干涉自相关信号函数的导出及其特性  

Derivation of Interferometric Autocorrelation Signal Functions and Their Characteristics

作　　者：陈碧芳[1] 

机构地区：[1]嘉兴学院机电工程学院,浙江嘉兴314001

出　　处：《嘉兴学院学报》2010年第6期45-48,共4页Journal of Jiaxing University

摘　　要：导出了含有平方啁啾及立方啁啾的二次干涉自相关(IAC)信号函数,基于归一化的干涉自相关二次谐波(IAC)信号表达式,通过对含有平方、立方啁啾的高斯型强度分布的复数光电场求积分,得到含有平方、立方啁啾的干涉自相关(IAC)信号解析式。对干涉自相关(IAC)信号解析式进行数值计算与分析,得到相同啁啾量值的含有线性、平方及立方啁啾的干涉自相关信号形状明显不同,不同量值的线性啁啾干涉自相关信号形状也明显不同。干涉自相关(IAC)信号形状与啁啾有关。含有平方、立方啁啾的干涉自相关(IAC)信号解析式对测量超短激光脉冲啁啾提供了理论基础.Intefferometric autocorrelation （IAC） signal functions of square and cubic chirps were derived in this experiment. Based on the normalized second harmonic interferometric autocorrelation （IAC） signal expression, the in- terferometric autocorrelation （IAC） analytic expressions of square and cubic chirps were obtained by integrating the plural optical field quadrature of Gaussian intensity distribution of the square and cubic chirps. Through the numerical calculation and analysis of the signal analytic expressions, it was seen that the interferometric autocorrelation （ IAC ） signals of the same chirp value but containing respective linearity, square and cubicity, differ significantly in their shapes, and the interferometrie autocorrelation （IAC） signals of the linear chirp with different values also showed their obvious discrepancies. The result indicates that the interferometric autoeorrelation （IAC） signal shape depends on the chirp. The interferometric autocorrelation （IAC） analytic expressions of square and cubic chirps can provide a theoretical basis for measuring ultra - short laser pulse chirp.

关 键 词：超短激光脉冲测量 啁啾 干涉自相关 干涉自相关信号解析式 

分 类 号：TN249[电子电信—物理电子学]