Time-dependent density-functional theory with optimized effective potential and self-interaction correction: Application to the study of coherent control of multiple high-order harmonic generation of He atoms in mixed laser fields
✍ Scribed by Xiao-Min Tong; Shih-I Chu
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 263 KB
- Volume
- 69
- Category
- Article
- ISSN
- 0020-7608
No coin nor oath required. For personal study only.
✦ Synopsis
We present a time-dependent density-functional theory TDDFT with
Ž
. Ž . optimized effective potential OEP and self-interaction correction SIC for nonperturbative treatment of multiphoton and nonlinear optical processes of manyelectron systems in intense laser fields. The resulting TDOEPrKLI-SIC equations are structurally similar to the time-dependent Hartree᎐Fock equations but include the many-body effects through an orbital-independent single-particle local time-dependent Ž . exchange᎐correlation xc potential. The method is applied to the all-electron study of the Ž . coherent control of multiple high-order harmonic generation HHG of He atoms in two-color mixed laser fields. A generalized pseudospectral time propagation method is introduced for efficient and accurate solution of the TDOEPrKLI-SIC equations in three Ž . spatial dimensions. It is found that the mixing of a strong second-harmonic 527 nm field Ž . with a weak fundamental 1053 nm field can lead to the production of both odd and even harmonics simultaneously with relatively high yield. Further, the relative efficiency