PHOTOIONIZATION BY A BICHROMATIC FIELD - ADIABATIC THEORY

被引:19
作者
PAZDZERSKY, VA
YUROVSKY, VA
机构
[1] Tashkent State University, Tashkent
来源
PHYSICAL REVIEW A | 1995年 / 51卷 / 01期
关键词
D O I
10.1103/PhysRevA.51.632
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Atom photoionization by the superposition of a fundamental field and its second harmonic is considered. The finite analytical expressions for the photoionization probability are obtained using the adiabatic approximation. They demonstrate that the photoelectron angular distribution has a polar symmetry when the electrical field strength has a maximal polar asymmetry and the distribution is asymmetrical when the field is symmetrical. A strict proof of the polar symmetry of the photoionization probability in the case of the electrical field with maximal asymmetry is deduced using the Keldysh-Faisal-Reiss theories. The obtained results are in agreement with the experimental data available. © 1995 The American Physical Society.
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页码:632 / 640
页数:9
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