National Natural Science Foundation of China(91850109,61775021,11474040);Education Department of Jilin Province(JJKH20181104KJ,JJKH20190549KJ,JJKH20190555KJ);“111”Project of China(D17017);Changchun University of Science and Technology(XQNJJ-2018-02).
The comprehensive capture of near field spatiotemporal information of surface plasmon polaritons(SPPs)is a prerequisite for revealing their physical nature.In this study,we first performed an independent,spatiotempora...