Comment on 'Scheme for multistep photoionization of atoms' - art. no. 047401

摘要

In a recent paper, Bo Liu and Xi-Jing Ning [Phys. Rev. A 64, 013401 (2001)] compared a multistep photoionization scheme where the resonant laser pulses act in consecutive order with one where the same laser pulses act simultaneously. Their conclusion is that the "consecutive" scheme is much more (several orders of magnitude) efficient than the "simultaneous" one, which they call traditional. We show, however, that optimum conditions for efficient photoionization with the simultaneous (or traditional) scheme are very different from those assumed by the authors. So the difference between two schemes, in-terms of efficiency, is of much lower importance, if any, than that believed by the authors. [References: 6]