Predicting wavelength dependency of optical modulation of twisted nematic liquid crystal display in the visible range

Abstract

One of the main problems in liquid crystal spatial light modulators (LC-SLM) is the prediction of their optical modulation behavior for different wavelengths; this coupled phase/amplitude modulation can be hard to measure for specific wavelengths and setups, yet it is required to be included in the study of a number of SLM's applications. This work proposes a simulation model to predict the phase/amplitude modulation for different twisted nematic liquid crystal displays (TN-LCD) optical setups, this model incorporates the effects of wavelength in addition to other parameters which already have been studied before like twist angle as internal parameter and polarizers angles, we verified the accuracy of our model compared to results of previously published work.