灵敏的超短激光脉冲啁啾阶数及量值测量
Sensitive Method for Visual Detection of Order of Chirpand its Magnitude in Ultrashort Laser Pulse
投稿时间:2009-10-13  修订日期:2010-02-17
DOI:
中文关键词:  超快光学  超短激光脉冲测量  啁啾阶数  干涉自相关包络  包络比值  中央半宽
英文关键词:ultrafast optics  ultrashort laser pulse measurements  order of chirp  interferometric autocorrelation (IAC) envelope  ratio of envelope  center halfwidth
基金项目:
作者单位E-mail
陈碧芳 浙江省嘉兴市嘉兴学院机电工程学院 cccbbbffflll@yahoo.com.cn 
刘天夫 中国计量学院信息工程学院  
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中文摘要:
      提出了新型测量超短激光脉冲啁啾阶数及量值的方法。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,通过对干涉自相关(IAC)包络比值进行分析计算,获得判断啁啾阶数的方法,并得到包络比值的中央半宽与啁啾量值之间的对应关系。采用干涉自相关(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,利用该方法判断出被测超短激光脉冲含有平方啁啾,其啁啾参数为0.80,从而实现了对超短激光脉冲啁啾阶数及量值测量。
英文摘要:
      A novel method is presented to determine various higher order chirps in ultrashort laser pulses. This is based on ratio of interferometric autocorrelation (IAC) envelope, which is highly sensitive to chirp. By analyzing and calculating the ratio of interferometric autocorrelation (IAC) envelope, the envelope ratio to determine of various higher order chirps method, and center halfwidth of IAC envelope ratio as a functions of the chirp for different orders of chirp were obtained. The theoretical analysis is supported by experimental ratio of IAC envelope. With this method, the square chirp pulse was found and the chirped ultrashort laser pulse was measured 0.80, the various higher order chirps measurement is realized.
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