| 测量超短激光脉冲啁啾阶数及量值的一种新方法 |
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| 引用本文： | 陈碧芳. 测量超短激光脉冲啁啾阶数及量值的一种新方法[J]. 光电子．激光, 2010, 0(11): 1698-1701 |
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| 作者姓名： | 陈碧芳 |
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| 作者单位： | 嘉兴学院机电工程学院;中国计量学院信息工程学院; |
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| 摘 要： | 提出了一种测量超短激光脉冲啁啾阶数及量值的新方法。根据二次干涉自相关(IAC)包络比值对啁啾有很高灵敏度的特性,通过对IAC包络比值进行分析计算获得判断啁啾阶数的方法,并得到包络比值中央半宽与啁啾量值间的对应关系。采用IAC二次谐波检测系统对加浓染料激光器输出的脉冲进行测量,结果表明,被测超短激光脉冲含有平方啁啾,啁啾参数为0.80,实现了对超短激光脉冲啁啾阶数及量值测量。
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| 关 键 词： | 超快光学 超短激光脉冲测量 啁啾阶数 干涉自相关(IAC)包络 包络比值 中央半宽 |
A novel method for measuring the order and magnitude of chirp in ultrashort laser pulses |
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| CHEN Bi-fang. A novel method for measuring the order and magnitude of chirp in ultrashort laser pulses[J]. Journal of Optoelectronics·laser, 2010, 0(11): 1698-1701 |
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| Authors: | CHEN Bi-fang |
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| Affiliation: | CHEN Bi-fang1,LIU Tian-fu2(1.School of Mechanical & Electrical Engineering,Jiaxing University,Jiaxing 314001,China,2.School of Information Engineering,China Jiliang University,Hangzhou 310034,China) |
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| Abstract: | A novel method is presented to determine the order and magnitude of chirps in ultrashort laser pulses based on the ratio of interferometric auto-correlation(IAC) envelope, which is highly sensitive to the chirps.By analyzing and calculating the ratio, the order of chirps and the center halfwidth of IAC envelope ratio as a function of the chirp magnitude for different order chirps are obtained.As an example, the chirp of a short pulse dye laser is determined with the method.In this laser, a square chirp puls... |
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| Keywords: | ultrafast optics ultrashort laser pulse measurement order of chirp interferometric autocorrelation (IAC) envelope ratio of envelope center half width |
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