中国物理B ›› 2018, Vol. 27 ›› Issue (3): 34206-034206.doi: 10.1088/1674-1056/27/3/034206
• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇 下一篇
Cai-Ping Zhang(张彩萍), Chang-Long Xia(夏昌龙), Xiang-Fu Jia(贾祥富), Xiang-Yang Miao(苗向阳)
Cai-Ping Zhang(张彩萍)1,2, Chang-Long Xia(夏昌龙)1, Xiang-Fu Jia(贾祥富)1, Xiang-Yang Miao(苗向阳)1
摘要: The effect of multiple rescattering processes on the harmonic emission from He atom in a spatially inhomogeneous field is discussed by solving the one-dimensional time-dependent Schrödinger equation and the classical equation of motion. By establishing the physical model of the harmonic emission in the inhomogeneous field, we discuss the related characters of the multiple rescatterings process in the harmonic generation process. It shows that the second rescattering rather than the first rescattering tends to determine the harmonic cutoff energy when the inhomogeneous parameter is larger than 0.0055. Additionally, with the classical simulation, the underlying physical mechanism of the continuum-continuum harmonics is also revealed. Moreover, this work may provide new physical insight into the harmonic generation in an inhomogeneous field, and is beneficial to further extract the harmonic emission from molecular systems.
中图分类号: (Ultrafast processes; optical pulse generation and pulse compression)