Nonsequential double ionization channels control of Ar with few-cycle elliptically polarized laser pulse by carrier-envelope-phase
Nonsequential double ionization channels control of Ar with few-cycle elliptically polarized laser pulse by carrier-envelope-phase
复制标题
少周期椭圆偏振激光脉冲载波包络相位对 Ar 的非顺序双电离通道控制
DOI：
10.1364/oe.24.007525
复制
发表时间：
2016-04-04
期刊：
影响因子：
3.8
通讯作者：
Liu, Xueshen
中科院分区：
文献类型：
--
作者：
Ben, Shuai;Wang, Tian;Liu, Xueshen
采用二维经典系综方法研究了Ar原子在几个周期椭圆偏振激光脉冲作用下的非顺序双电离（NSDI）的载波包络相位（CEP）依赖关系。我们区分了NSDI中两个特殊的电离通道，即碰撞碰撞电离（RII）和碰撞诱导激发与后续电离（RESI）。我们根据双电离和最终双电离之间的延迟时间来分离RII和RESI通道。通过对轨道的跟踪，我们发现电子相关谱以及两个通道之间的竞争敏感地依赖于激光场CEP。最后，可以通过改变CEP来实现两个通道之间的控制。(C)2016美国光学学会
The carrier-envelop-phase (CEP) dependence of nonsequential double ionization (NSDI) of atomic Ar with few-cycle elliptically polarized laser pulse is investigated using 2D classical ensemble method. We distinguish two particular recollision channels in NSDI, which are recollision-impact ionization (RII) and recollision-induced excitation with subsequent ionization (RESI). We separate the RII and RESI channels according to the delay time between recollision and final double ionization. By tracing the history of the trajectories, we find the electron correlation spectra as well as the competition between the two channels are sensitively dependent on the laser field CEP. Finally, control can be achieved between the two channels by varying the CEP. (C) 2016 Optical Society of America