Abstract
In this paper we present results of the Monte Carlo simulation of a two-dimensional nematic liquid crystal model in the presence of a spatially modulated externally applied electric field E(x). It is a situation encountered in optically addressed spatial light modulators based on liquid crystals. The boundary conditions employed in the simulations corresponded to an experimental configuration used frequently for light-induced grating recording in two-beam coupling experiments. The inter-molecular interactions in a liquid crystal model were described by the Lebwohl - Lasher Hamiltonian. Refractive index profiles were calculated for chosen values of offset electric field and as a function of spatial frequency . The dependences of amplitude of the refractive index modulation on and were determined.
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