  In this paper the possibility of generating nonlinear coherent states of the
radiation field in a micromaser is explored. It is shown that these states can
be provided in a lossless micromaser cavity under the weak Jaynes-Cummings
interaction with intensity-dependent coupling of large number of individually
injected two-level atoms in a coherent superposition of the upper and lower
states. In particular, we show that the so-called nonlinear squeezed vacuum and
nonlinear squeezed first excited states, as well as the even and odd nonlinear
coherent states can be generated in the presence of two-photon transitions.
