Studies of fringing field effects in liquid crystal beam-steering devices

Uzi Efron; Boris Apter; Eldad Bahat-Treidel

doi:10.1117/12.618218

30 August 2005 Studies of fringing field effects in liquid crystal beam-steering devices

Uzi Efron, Boris Apter, Eldad Bahat-Treidel

Proceedings Volume 5936, Liquid Crystals IX; 59360P (2005) https://doi.org/10.1117/12.618218
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

Liquid crystal (LC) devices including displays, beam-steering devices, electrically- and optically-controlled spatial light modulators, are widely used in a variety of applications. Some important operational properties of these devices, such as spatial resolution and diffraction efficiency, are severely limited by the influence of fringing electrical fields, generated between adjacent pixel electrodes. This work combines the results of three recent studies encompassing computer simulation, the development of an approximate analytical model and its experimental verification. The approximate analytical model ties the fringing-field-dependent broadening kernel, to the physical LC Cell properties. In particular, it is shown that, the broadening of the phase profile due to the fringing field is proportional to the LC cell thickness. These results are found to be in an excellent agreement both with high-precision computer simulations and experimental results. Finally, the phase broadening kernel is found to be independent of the particular shape of the phase profile, allowing the model to be used for other LC device architectures such as LCDs.

Citation Download Citation

Uzi Efron, Boris Apter, and Eldad Bahat-Treidel "Studies of fringing field effects in liquid crystal beam-steering devices", Proc. SPIE 5936, Liquid Crystals IX, 59360P (30 August 2005); https://doi.org/10.1117/12.618218

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