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首页> 外文会议>Liquid Crystals VIII >Stable dopant for Liquid Crystals as materials for Optically Addressed Spatial Light Modulators
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Stable dopant for Liquid Crystals as materials for Optically Addressed Spatial Light Modulators

机译：液晶的稳定掺杂剂，作为光学寻址空间光调制器的材料

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摘要

It is shown that 2,6 azo-substituted anthraquinone dye-doped systems are interesting alternative to Methyl Red (MR) doped NLCs as materials for Optically Addressed Spatial Light Modulators (OASLMs) without amorphous silicon layer. Nonlinearity in liquid crystals doped with new dye is studied. Dynamic holographic grating formation is observed under conditions of low power laser light and no external fields. The samples are planar and normal incidence of light is used. The results for dynamic holographic studies are compared with azo dye MR crystals and C_(60). It is shown that this dopant competes with the best known materials in terms of performance in 10 ms speed regime. The system under investigation possesses very good time stability and outstanding light fastness (even a power exceeding working light intensity 100 times is not destructive to the material). It does not form permanent component at any conditions, which is vital for applications where constant change of written information is required (OASLMs, dynamic holography, all-optical switching). Possible mechanisms and the nature of effects that lead to the photorefractive effect in the anthraquinone system are discussed. Resolution of the devices, their efficiency and optimal working conditions are investigated.
机译：结果表明，2,6偶氮取代的蒽醌染料掺杂体系是甲基红（MR）掺杂NLC的有趣替代品，作为无定形硅层的光学寻址空间光调制器（OASLM）的材料。研究了掺有新染料的液晶的非线性。在低功率激光和无外部场的条件下观察到动态全息光栅的形成。样品是平面的，并且使用法线入射。动态全息研究的结果与偶氮染料MR晶体和C_（60）进行了比较。结果表明，该掺杂剂在10 ms速度范围内的性能方面与最知名的材料竞争。所研究的系统具有很好的时间稳定性和出色的耐光性（即使功率超过工作光强度的100倍也不会破坏材料）。它在任何情况下都不构成永久性组件，这对于需要不断更改书面信息的应用（OASLM，动态全息术，全光切换）至关重要。讨论了在蒽醌系统中导致光折射作用的可能机理和作用性质。研究了设备的分辨率，效率和最佳工作条件。

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