Systems and methods for vacuum compensation in hot-filled and cooled containers. The crucible is composed of a continuous external shell and a sole plate, both cooled by a liquid circulating in internal channels. A first polarization control layer 581, which functions as a half-wave plate, and a second polarization control layer 582, which functions as a half-wave plate with a fast axis 592 extending at an angle of 45\xb0 to that of the first polarization control layer 581, are located on the laser oscillator 60.