超短脉冲干涉自相关导数光谱的啁啾特性  

Chirp Characteristic of Derivative Modified Spectrum Autointerferometric Correlation for Ultrashort Laser Pulses

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》2008年第6期91-93,共3页Journal of Jiaxing University

摘　　要：采用对二次干涉自相关(IAC)迹线求一阶导数,得到干涉自相关导数光谱(D-MOSAIC),并利用该导数光谱对啁啾有很高灵敏度的特性,对高斯型强度分布的线性啁啾、平方啁啾脉冲进行数值计算与模拟,得到导数光谱的峰值与啁啾大小的对应关系.提出了一种新颖的测量超短激光脉冲啁啾的方法,同时得出干涉自相关导数光谱能够精确地测量超短激光脉冲的啁啾大小.Based on derivative modified spectrum autointerferometric correlation （ D - MOSAIC ）, a simple and novel method is presented for visual detection of chirp in ultrashort laser pulses. It may be derived from a conventional second order interferometric autocorrelation trace. This method is highly sensitive to chirp. The Gauss intensity of fem- tosecond chirped pulses is numerically calculated, and the peak of the D - MOSAIC as a function shows its correspondence to different orders of chirp is obtained. Chirp of ultrashort laser pulses can be determined accurately by using the D - MOSAIC.

关 键 词：超短激光脉冲测量 干涉自相关导数光谱 D-MOSAIC技术 啁啾 

分 类 号：TN243[电子电信—物理电子学]