New solutions for the mode functions of the electromagnetic field in i
deal cavity which boundary oscillates at a resonance frequency are obt
ained in the long-time limit. The rate of photons creation from initia
l vacuum state is shown to be time independent and proportional to the
amplitude of oscillations and the resonance frequency. Temperature co
rrections are evaluated. The squeezing coefficients for the quantum st
ates of the field generated are calculated, as well as the backward re
action of the field on the vibrating wall.