In this paper, by means of a full quantum theory, we have obtained the general fomula of steady photoelectron energy spectrum in a. system of the Raman-type atom interacting with a two-mode field. The influences of photon distribution of driven field on the steady photoelectron energy spectrum are investigated. The properties of atomic coherent trapping related to the correlation characters of photons between the mode 1 and the mode 2 are analysed. And the condition appe...
