强激光与粒子束, 2012, 24 (6): 1311, 网络出版: 2012-06-06
H2+和H3+系统的电子频谱与高次谐波谱
Electron and high-harmonic generation spectra of H2+ and H3+ systems
摘要
针对单电子H2+和双电子H3+系统,采用对称分裂算符法求解波函数的时间演化。计算了电子的含时频谱和体系的高次谐波谱,结果表明:电子频谱和高次谐波谱呈互补规律,即电子频谱峰值出现在基波的偶数倍频率位置,高次谐波则出现在奇数位置。对高次谐波谱随软化库仑参数的变化规律进行了数值研究,发现只在软化库仑参数的一定范围内才产生高次谐波,对该现象作了解释。
Abstract
The paper presents our numerical simulations on single-electron H2+ and two-electron H3+ systems with the symmetric split operator technique. The results show that the electron spectra are complementary to the conventional high-harmonic generation(HHG) spectra: the electron spectra feature peaks located at even harmonics, while the HHG spectra’ peaks are at odd-numbered positions. Only limited values of the core-softening parameter can support HHG, and some preliminary explanation is given.
代春燕, 于川, 张贵忠, 向望华, 姚建铨. H2+和H3+系统的电子频谱与高次谐波谱[J]. 强激光与粒子束, 2012, 24(6): 1311. Dai Chunyan, Yu Chuan, Zhang Guizhong, Xiang Wanghua, Yao Jianquan. Electron and high-harmonic generation spectra of H2+ and H3+ systems[J]. High Power Laser and Particle Beams, 2012, 24(6): 1311.