To study the effect of laser intensity on the radiation of electron, a model of the interaction between a single electron and a laser is constructed based on Thomson scattering theory. The numerical simulation results show that the oscillatory motion of electron is more intense under the effect of more intense lasers. Meanwhile, the maximum radiated power of electron is increased dramatically, and the direction of maximum radiation is closer to the longitudinal direction. In the direction of maximum radiation, the unit angular radiated power shows an asymmetric bimodal structure in the time domain. When the laser intensity is increased, the symmetry of the bimodal structure is decreased significantly. The results in this paper contribute to the study of nonlinear radiation of electron in strong laser fields.
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