Reconstruction of Fresnel holograms using partial wave front information

In this work we analyze the behavior of complex information in Fresnel domain taking into account the limited capability to display complex transmittance values of current liquid crystal devices, when used as holographic displays. In order to do this analysis we compute the reconstruction of Fresnel holograms at several distances using the different parts of the complex distribution (real and imaginary parts, modulus and phase) as well as using the full complex information adjusted with a method that combines two real configurations of the devices in an adding architecture. The RMS error between the amplitude of these reconstructions and the original amplitude is used to evaluate the quality of the information displayed. The results show different behavior for the reconstructions using the different parts of the complex distribution and using the combined method of two devices. There is possible to obtain better reconstructions using two devices, which added configurations densely cover the complex plane. Simulated and experimental results are also presented