CAJ | 학술논문

采用二维渐近边界条件,将任意极化激光与原子相互作用的二维含时Schr(o)dinger方程无穷空间初值问题转化为有界空间的初边值问题,近而将截断后的初边值问题离散成线性正则方程组,而后利用辛算法求解正则方程得到含时波函数.最后利用含时波函数求得高次谐波谱,证明二维渐近边界条件和辛算法是合理而有效的.
채용이유점근변계조건,장임의겁화격광여원자상호작용적이유함시Schr(o)dinger방정무궁공간초치문제전화위유계공간적초변치문제,근이장절단후적초변치문제리산성선성정칙방정조,이후이용신산법구해정칙방정득도함시파함수.최후이용함시파함수구득고차해파보,증명이유점근변계조건화신산법시합리이유효적.
2-dimensional(2-D)asymptotic boundary condition(ABC)of 2-D time-dependent Schr(o)dinger equation (TDSE)for atoms in an arbitrary polarized laser field is investigated.The condition is obtained by means of Fourier transformation,and the 2-D TDSE is discretized into a linear canonical equation solved via symplectic algorithm.An arbitrary polarized laser-atom interaction is also investigated.Calculated high order harmonic generation(HHG)spectra are in good agreement with theoretical results.