双色激光场对氢原子高次谐波的影响

为了深入研究高次谐波产生的多光子过程,使用劈裂算符结合拟谱的方法对氢原子在双色强激光场中的高次谐波辐射作了数值模拟计算,结果显示,当附加一适当双色激光场时,高次谐波谱的平台区大幅提高和展宽.根据计算结果提出的混合跃迁道理论,成功解释了高次谐波谱所呈现的细节特征.

The analysis of hydrogen atom high-order harmonic

In oder to further investigate the multipphoton process of high order harmonic, a Split-operator pseudospectral method was used to calculate the spectral of high-order harmonic that the atomic hydrogen generated in a bichrome intense laser field. Results indicate that the platform of high order harmonic can be enhanced and widened considerably when it is put in a proper bichrome laser field. Based on the results, a theory of mixed transitions path was put forwad, which can successfully explain the specific character presented by the psectral of high order harmonic.