  The photorecombination radiation on a neighbor center of an electron ionized
in the nonlinear tunneling regime is discussed. In the framework of the active
electron model an analytical solution of the problem has been obtained. The
analytical solution for distribution of the radiation energy spectrum has been
derived both for one and three dimension problems. The optimal parameters of
the field and the distance between quantum wells for a process of effective
photorecombination with a broad spectrum have been formulated.
