Recent Publications Online

Nonlinear effects of phase blurring on Fourier transform holograms

Markus Duelli, Li Ge, and Robert W. Cohn

The ElectroOptics Research Institute
University of Louisville
Louisville, KY 40292


            Liquid-crystal light valves can have intensity-dependent resolution. We find for a nematic liquid-crystal light valve that this effect is well modeled as a phase that has been blurred by a linear space-invariant filter. The phase point-spread function is measured and is used in simulations to demonstrate that it introduces inter-modulation products to the diffraction patterns of computer-generated Fourier transform holograms. Also, the influence of phase blurring on a pseudorandom-encoding algorithm is evaluated in closed form. This analysis applied to a spot array generator design indicates that nonlinear effects are negligible only if the di-ameter of the point-spread function is a small fraction of the pixel spacing.

M. Duelli, L. Ge, and R. W. Cohn "Nonlinear effects of phase blurring on Fourier transform holograms," J. Opt. Soc. Am. A. 17(9), 1594-1605 (September 2000)

PDF file entire paper