  The existence of higher order entanglement in the stimulated and spontaneous
Raman processes is established using the perturbative solutions of the
Heisenberg equations of motion for various field modes that are obtained using
the Sen-Mandal technique and a fully quantum mechanical Hamiltonian that
describes the stimulated and spontaneous Raman processes. Specifically, the
perturbative Sen-Mandal solutions are exploited here to show the signature of
the higher order two-mode and multi-mode entanglement. In some special cases,
we have also observed higher order entanglement in the partially spontaneous
Raman processes. Further, it is shown that the depth of the nonclassicality
indicators (parameters) can be manipulated by the specific choice of coupling
constants, and it is observed that the depth of nonclassicality parameters
increases with the order.
