Phase-matched enhancements of high-harmonic soft X-rays by adaptive wave-front control with a genetic algorithm
Phase-matched enhancements of high-harmonic soft X-rays by adaptive wave-front control with a genetic algorithm
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DOI：
10.1007/s00340-003-1400-7
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发表时间：
2004-02
期刊：
影响因子：
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通讯作者：
D. Yoshitomi;J. Nees;N. Miyamoto;T. Sekikawa;T. Kanai;G. Mourou;S. Watanabe
中科院分区：
文献类型：
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作者：
D. Yoshitomi;J. Nees;N. Miyamoto;T. Sekikawa;T. Kanai;G. Mourou;S. Watanabe
据我们所知，首次利用59通道薄膜变形镜和遗传算法相结合的方法，对745 nm钛宝石激光器进行自适应波前控制，增强了高次谐波软X射线的产生。从17 nm到28 nm的谐波被放大了13倍。数值计算表明，平台谐波的增强是由于宏观位相匹配效应，而截止谐波的增强是由于聚焦强度的增加。
We demonstrate the enhancement of high-harmonic soft-X-ray generation by adaptive wave-front control of a 745-nm Ti:sapphire laser by use of a 59-channel membrane deformable mirror, combined with a genetic algorithm, for the first time to our knowledge. The harmonics ranging from 17 nm to 28 nm were enhanced by factors up to 13. The numerical calculations illustrate that the enhancements of the plateau harmonics are due to macroscopic phase-matching effect, whereas those of the cutoff harmonics are due to the increase in focal intensity.