  Although the low frequency electronic Raman response in the superconducting
state of the cuprates can be largely understood in terms of a d-wave energy
gap, a long standing problem has been an explanation for the spectra observed
in the $A_{1g}$ polarization orientations. We present calculations which
suggest that the peak position of the observed $A_{1g}$ spectra is due to a
collective spin fluctuation mode.
