We report
modulating spontaneous four-wave mixing, fourth-order fluorescence,
and intensity noise correlation by polarization-dressing effect at
different temperatures in a Pr
3+
:Y
2
SiO
5
crystal. The delay time, Autler–Townes splitting, and shape
of correlation curve are changed observably with temperature and polarization
state of dressing field. These results demonstrate competition between
polarization-dressing and phonon effects. The impact of temperature
on nonlinear response is very important for the stability of quantum
optical devices.