Ferroelectric liquid crystals (FLC) as light modulators in the stabilizatio
n system of a Zeeman laser increase the quality of stabilization due to the
high switching speed and make the whole system very compact. We analyze th
e operation of the optical part of such a stabilization system and derive o
ptimum values of the FLC cell parameters. Properties of available liquid cr
ystals and their temperature dependence are considered as well as, in parti
cular, the influence of a slight ellipticity of the laser radiation.