Validity of factorization of the high-energy photoelectron yield in above-threshold ionization of an atom by a short laser pulse.
Validity of factorization of the high-energy photoelectron yield in above-threshold ionization of an atom by a short laser pulse.
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DOI：
10.1103/physrevlett.108.213002
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发表时间：
2012-05
影响因子：
8.6
通讯作者：
M. Frolov;M. Frolov;D. V. Knyazeva;N. L. Manakov;A. Popov;O. Tikhonova;E. Volkova;Minghui Xu
中科院分区：
文献类型：
--
作者：
M. Frolov;M. Frolov;D. V. Knyazeva;N. L. Manakov;A. Popov;O. Tikhonova;E. Volkova;Minghui Xu
An analytic description for the yield, P(p), of high-energy electrons ionized from an atom by a short (few-cycle) laser pulse is obtained quantum mechanically. Factorization of P(p) in terms of an electron wave packet and the cross section for elastic electron scattering (EES) is shown to occur only for an ultrashort pulse, while in general P(p) involves interference of EES amplitudes with laser-field-dependent momenta. The analytic predictions agree well with accurate numerical results.
