Pulse width measurement of high-order harmonics by autocorrelation
Pulse width measurement of high-order harmonics by autocorrelation
复制标题
通过自相关测量高次谐波的脉宽
DOI：
10.1007/s003400050063
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
S. Watanabe
中科院分区：
文献类型：
--
作者：
Y. Kobayashi;T. Ohno;T. Sekikawa;Y. Nabekawa;S. Watanabe
利用He和Ar的双光子和三光子电离作为非线性现象，用自相关技术测量了钛宝石（TiS）激光器的七次和九次谐波脉宽。第7次和第9次谐波的脉冲宽度分别为47 fs和27 fs，其中基波脉冲的脉冲宽度为34 fs。第9次谐波的脉冲宽度强烈地依赖于基波脉冲的峰值强度。这些结果可以通过考虑基本光束的时间和空间分布的量子理论来解释。
Pulse widths of the 7th and 9th harmonics of a Ti:sapphire (TiS) laser have been measured by an autocorrelation technique using two-photon and three-photon ionization of He and Ar as nonlinear phenomena. The pulse widths of the 7th and 9th harmonics were 47 fs and 27 fs, respectively, where the pulse width of the fundamental pulse was 34 fs. The pulse width of the 9th harmonic depends strongly on the peak intensity of the fundamental pulse. These results can be explained by quantum theory by taking into account the temporal and spatial distribution of the fundamental beam.