Emelin Mikhail Yu, Ryabikin Mikhail Yu, Sergeev Alexander M
Institute of Applied Physics of RAS, 46 Ulyanov Street, 603950 Nizhny Novgorod, Russia.
Opt Express. 2010 Feb 1;18(3):2269-78. doi: 10.1364/OE.18.002269.
We present the detailed theoretical study of single attosecond pulse production from excited molecules driven by intense laser pulse. We demonstrate the possibility for continuously tunable soft x-ray production via high-order harmonic generation from a stretched aligned molecule undergoing Coulomb-barrier suppression ionization. This frequency tuning results from the quantum interference of free-electron wave packets emanating from different nuclei. High sensitivity of the shape of ionized electron wave packet to molecular alignment and internuclear separation in this regime offers the opportunity for ultrafast dynamic imaging of excited molecular transients.
我们展示了由强激光脉冲驱动的激发分子产生单个阿秒脉冲的详细理论研究。我们证明了通过对经历库仑势垒抑制电离的拉伸排列分子进行高次谐波产生来连续可调谐产生软X射线的可能性。这种频率调谐源于不同原子核发出的自由电子波包的量子干涉。在这种情况下，电离电子波包的形状对分子排列和核间距具有高灵敏度，这为激发分子瞬态的超快动态成像提供了机会。
