Model of high-order harmonic generation from laser interaction with a plasma grating.
Harmonic generation from linearly polarized high-intensity short-pulse laser normally impacting a solid plasma grating is investigated using analytical modeling and particle-in-cell simulation. It is found that when the radiation excited by the relativistic electron quiver motion in the laser fields suitably matches a harmonic of the grating periodicity, it will be significantly enhanced and peak with narrow angular spread in specific directions. The corresponding theory shows that the phenomenon can be attributed to an interference effect of the periodic grating on the excitation.
College of Science, National University of Defense Technology, Changsha 410073, P. R. China.
S J
SJ
Zhang
College of Science, National University of Defense Technology, Changsha 410073, P. R. China.|IFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai 200240, P. R. China.
H B
HB
Zhuo
College of Science, National University of Defense Technology, Changsha 410073, P. R. China.
D B
DB
Zou
College of Science, National University of Defense Technology, Changsha 410073, P. R. China.
L F
LF
Gan
College of Science, National University of Defense Technology, Changsha 410073, P. R. China.
H Y
HY
Zhou
College of Science, National University of Defense Technology, Changsha 410073, P. R. China.
X Z
XZ
Li
Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027, P. R. China.
M Y
MY
Yu
Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, P. R. China.
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W
Yu