Self-activated liquid-crystal cells with photovoltaic substrates |
| |
Authors: | Carns Jennifer L Cook Gary Saleh Mohammad A Serak Svetlana V Tabiryan Nelson V Evans Dean R |
| |
Institution: | Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA. |
| |
Abstract: | We show that photovoltaic fields are capable of efficiently reorienting liquid crystals, leading to new concepts of optically addressable light modulators. Using an arrangement consisting of a liquid-crystal layer between LiNbO3:Fe photovoltaic substrates, we observed spatial filtering due to self-phase modulation in a planar-oriented cell and nonlinear transmission between crossed polarizers in a twist-oriented cell. These processes do not require an external electric field. The substrates are arranged such that light propagates along the +c axis in each substrate, allowing a secondary process of power transfer to occur through contradirectional photorefractive two-beam coupling. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|