Pseudospectral method with symplectic algorithm for he solution of time-dependent Schr(o)dinger equations

• 来源期刊: 中国物理（英文版）
• 关键词: pseudospectral method symplectic algorithm high-order harmonic generation
• 年，卷（期）: 2007,（7）
• 页码范围: 1822-1826
• 页数: 5页
• 语种: 英文

摘要

A pseudospectral method with symplectic algorithm for the solution of time-dependent Schr(o)dinger equations(TDSE) is introduced. The spatial part of the wavefunction is discretized into sparse grid by pseudospectral method and the time evolution is given in symplectic scheme. This method allows us to obtain a highly accurate and stable solution of TDSE. The effectiveness and efficiency of this method is demonstrated by the high-order harmonic spectra of one-dimensional atom in strong laser field as compared with previously published work. The influence of the additional static electric field is also investigated.