Tunable geometric phase retarders using photo-aligned liquid crystal devices

摘要

Here we demonstrate the fabrication processes and working parameters of tunable phase retarders based on photo-aligned Liquid Crystal (LCs) cells by combining the photo-pattering and self-assembly processes. The proposed LC devices were assembled by Indium Tin Oxide (ITO) transparent conductive layers deposited on a glass and quartz substrates and spin coated with thin polyamide (PI) layer as photo-alignment material. We study the voltage-transmittance and phase retardation behavior of assembled LC cells and demonstrate polarization sensitive spatial patterns, that openpromising features fornext generation optical elements as waveplates, lenses, phase retarders, etc.