Semiclassical-wave-function perspective on high-harmonic generation

被引:8
作者
Mauger, Francois [1 ]
Abanador, Paul M. [1 ]
Lopata, Kenneth [2 ]
Schafer, Kenneth J. [1 ]
Gaarde, Mette B. [1 ]
机构
[1] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA
[2] Louisiana State Univ, Dept Chem, Baton Rouge, LA 70803 USA
关键词
BARRIER-SUPPRESSION REGIME; FIELD-IONIZATION RATES; MULTIPHOTON IONIZATION; ATTOSECOND SCIENCE; INTENSE-LASER; X-RAYS; DYNAMICS; PHYSICS; ATOMS; MOLECULES;
D O I
10.1103/PhysRevA.93.043815
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We introduce a semiclassical-wave-function (SCWF) model for strong-field physics and attosecond science. When applied to high-harmonic generation (HHG), this formalism allows one to show that the natural time-domain separation of the contribution of ionization, propagation, and recollisions to the HHG process leads to a frequency-domain factorization of the harmonic yield into these same contributions, for any choice of atomic or molecular potential. We first derive the factorization from the natural expression of the dipole signal in the temporal domain by using a reference system, as in the quantitative rescattering (QRS) formalism [J. Phys. B 43, 122001 (2010)]. Alternatively, we show how the trajectory component of the SCWF can be used to express the factorization, which also allows one to attribute individual contributions to the spectrum to the underlying trajectories.
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页数:11
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