Selection of right-circular-polarized harmonics from p orbital of neon atom by two-color bicircular laser fields

• 来源期刊: 中国物理B（英文版）
• 关键词: high-order harmonic generation circular polarization field polarization selection
• 年，卷（期）: 2019,（10）
• 页码范围: 354-360
• 页数: 7页
• 语种: 英文
• DOI: 10.1088/1674-1056/ab4278

摘要

The polarization properties of high-order harmonic generation (HHG) in the two-color circularly polarized laser fields are investigated by numerically solving the two-dimensional time-dependent Schr(o)dinger equation.By adding a wavelength of 1600-nm right-circular-polarized field to an 800-nm left-circular-polarized field,HHG is simulated from a real model ofneon atom with p orbital,but not from a hydrogen-like atom model with s orbital.The orders of 3n + 1 can be selected while the orders of 3n + 2 are suppressed by adjusting the intensities of the two pulses.The physical mechanism is analyzed by time-frequency analysis and semiclassical model.