正交双色场中氦原子体系高次谐波产生的理论研究

Theoretical Investigation of High-order Harmonic Generation from He in Orthogonally Polarized two-Color Laser Field

通过求解二维含时薛定谔方程理论研究了氦原子体系在正交双色场中高次谐波的产生.数值结果表明调节x方向激光的强度谐波的效率并不会有明显的改变但是可以拓宽谐波谱,此时主要由长量子轨道控制谐波的发射.

High-order harmonic generation from He atom in orthogonally polarized two-color laser field has been theoretically investigated by solving the two-dimensional time-dependent Schrdinger equation. The results show that the harmonic spectrum can be extended by adjusting the laser intensity of the x direction,which can almost keep the harmonic intensity unchanged. Moreover,the long quantum trajectory tends to contribute to the harmonic emission.