  I consider a nonlinear response of conventional superconductors contaminated
with potential impurities or imperfections to a circular polarized light. I
focus on dc contributions to the induced current density which describe the
emergence of the static magnetization in a superconductor. This effect is known
as inverse Faraday effect. By employing quasiclassical theory of
superconductivity I derive an expression for the induced static magnetization
as a function of frequency of an external ac field and disorder scattering
rate. The scattering of electrons off potential impurities is taken into
account within the framework of the self-consistent Born approximation. It is
found that the magnitude of the inverse Faraday effect decreases with an
increase in disorder scattering rate. I have also discovered that the value of
the induced magnetization has a characteristic minimum at a frequency which
approximately equals twice the value of the pairing gap in a clean
superconductor and shifts to higher values with an increase in disorder
scattering rate.
