One optical base is provided on each side of a housing that houses a laser
oscillator. Optical parts of an optical resonator are fixed to the optical
bases. The optical bases are fixed to each other, independently from the
housing, by supporting rods. A plate spring and two dampers fix the
respective optical base to respective end of the housing. The plate spring
bends in the direction of the laser beam when the housing deforms. The
damper attenuates oscillation generated due to the displacement of the
housing.
