Anomalous ionization efficiency by few-cycle pulses in the multiphoton ionization regime
Anomalous ionization efficiency by few-cycle pulses in the multiphoton ionization regime
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DOI：
10.1103/physreva.76.023416
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发表时间：
2007-08
影响因子：
2.9
通讯作者：
Chengpu Liu;T. Nakajima
中科院分区：
文献类型：
--
作者：
Chengpu Liu;T. Nakajima
从理论上研究了激光脉冲宽度对氢原子和负氢离子电离产额的影响。通过数值求解含时薛定谔方程，我们发现当多光子电离为主要电离机制时，在低强度下，少周期脉冲的电离效率出乎意料地大于多周期脉冲的电离效率.
We theoretically study the effect of laser pulse durations on the ionization yield of hydrogen atoms and negative hydrogen ions. By numerically solving the time-dependent Schr\"odinger equation we find that the ionization efficiency by few-cycle pulses is unexpectedly larger than that by many-cycle pulses at low intensities when multiphoton ionization is the dominant ionization mechanism.