▎ 摘　　要

We manipulate amplitude of terahertz waves emitted from holey nitrogenated graphene by circularly polarized light which is further substantiated by considering components of photo currents in holey structure. In addition, variations in parameters such as excitation fluence and azimuthal angle along with effect of different substrates and in-plane magnetic field provide insight into underlying mechanism for THz generation. The different forms of graphite have also been experimentally compared in order to elaborate the effect of material's parameters on generated THz amplitude.