J4 ›› 2014, Vol. 31 ›› Issue (6): 678-682.

• 激光技术与器件 • 上一篇    下一篇

基于小波分析的光谱相干电场法的误差分析

文汝红1,易淼2,3,黄儿松2,3,肖平平4   

  1. 1宜春学院物理科学与工程技术学院 江西 宜春336000;2宜春学院文传学院 江西 宜春 336000
  • 收稿日期:2014-02-20 修回日期:2014-03-07 出版日期:2014-11-28 发布日期:2014-11-17
  • 通讯作者: 文汝红(1979-),女,江西萍乡,硕士,副教授,从事超快光学及信息处理研究。 E-mail:hongwenru@126.com
  • 基金资助:
    国家自然科学基金(61168002)

Effects of shaping factor on spectral phase reconstruction based on wavelet analysis

Wen Ruhong, Yi miao, Huang Ersong, Xiao Pingping   

  1. 1 Physics Science and Technology College, Yichun university, Yichun 336000, China; 2 Liberal Arts and Communication College, Yichun university, Yichun 336000 China
  • Received:2014-02-20 Revised:2014-03-07 Published:2014-11-28 Online:2014-11-17

摘要: 为了更精确地评价超短脉冲的特性,利用小波变换的时间频率联合分析和多尺度分析特性,将小波变换应用于光谱位相相干电场重构法(SPIDER),对给定脉冲进行了数值模拟,讨论了小波函数的形状因子对还原误差的影响,确定了形状因子的选取原则,采用与傅里叶变换互校的方法来找到合适的形状因子来减小形状因子对还原结果的影响。最后对KLM钛宝石激光器输出的脉冲采用SPIDER法进行了测量,并与傅里叶变换结果进行了比较,证明了方法的准确性和可行性。

关键词: 量子光学, 形状因子, 小波分析, 光谱位相相干电场法

Abstract: In order to measure ultrashort pulse more accurate, wavelet transform was applied to spectral phase interferometry of direct electric reconstruction (SPIDER) using joint time frequency analysis and multi-scale analysis feature. The given pulse was simulated based on wavelet transform. It is discussed that the influence of shaping factor to error of retrieval phase. The selecting principle of shape factor was determined. The characterization of TI: sapphire laser was measured with SPIDER based on wavelet transform. The comparison with Fourier transform prove the precision of the above discussion.

Key words: quantum optics, shape factor, wavelet transform, SPIDER

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