▎ 摘　　要

We have studied numerically the excitation of surface modes of transverse electric polarization in doped graphene. Using the prism-based Otto configuration, the electromagnetic resonances were found within ultra-tiny angular windows of width of order of Delta theta(i) = 10(-3) degrees or lower, beyond the critical angle where evanescent fields are already available. We obtained absorption peaks of angular position strongly dependent on the prism-graphene separation d, which is larger than d(c), the cutoff prism-graphene separation. We prove numerically that dc depends on the graphene parameters and can be written as d(c) = alpha/2, where alpha(omega) is the decay length of the electromagnetic field of the modes. With doping levels of Fermi energy 0.2 eV