首页> 外文会议>NATO Advanced Research Workshop on Super-Intense Laser-Atom Physics Sep 24-30, 2000 Han-sur-Lesse, Belgium >INTERFERENCE STABILIZATION: A-AND V-SCHEMES, DYNAMICS OF IONIZATION, INITIAL COHERENT POPULATION OF RYDBERG LEVELS AND QUANTUM PHASE CONTROL OF THE IONIZATION YIELD
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INTERFERENCE STABILIZATION: A-AND V-SCHEMES, DYNAMICS OF IONIZATION, INITIAL COHERENT POPULATION OF RYDBERG LEVELS AND QUANTUM PHASE CONTROL OF THE IONIZATION YIELD

机译:干扰稳定化:A型和V型方案,电离动力学,莱德伯格水平的初始相干种群和电离产量的量子相控制

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So, in the V-type interference stabilization the yield of photoelectrons depends significantly on phases of the initial population of Rydberg states. With properly chosen phases of the initial Rydberg probability amplitudes, an atom can be made either completely ionized by a sufficiently long laser pulse or almost no ionized at all. Phase distributions of Rydberg probability amplitudes can be created and efficiently controlled in the two-pulse pump-probe scheme of photoionization. In such a scheme the first pulse creates a superposition of Rydberg states stable with respect to photoionization. During the period of time between the two pulses phases of this superposition change in a controllable way. In dependence on the delay time between the pulses, different types (stable or unstable) of Rydberg superposition states arise at the instant of time when the second pulse begins. For this reason, the probability of ionization of an atom by the second pulse depends periodically on the delay time between the pulses and varies in a wide range (approximately from zero to one).
机译:因此,在V型干涉稳定化中,光电子的产量在很大程度上取决于Rydberg态初始种群的相位。通过适当选择初始里德伯格概率振幅的相位,可以使原子通过足够长的激光脉冲完全电离,或者几乎完全不被电离。可以在光电离的两脉冲泵浦探针方案中创建并有效控制Rydberg概率振幅的相位分布。在这样的方案中,第一脉冲产生相对于光电离稳定的里德堡态的叠加。在两个脉冲之间的时间段内,该叠加的相位以可控制的方式变化。根据脉冲之间的延迟时间,在第二个脉冲开始的瞬间会出现不同类型(稳定或不稳定)的里德堡叠加态。因此,第二脉冲使原子电离的概率周期性地取决于脉冲之间的延迟时间,并且在宽范围内(从零到一)变化。

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