Liquid-crystal-droplet optical microcavities
Liquid-crystal-droplet optical microcavities
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DOI：
10.1080/02678292.2016.1221151
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发表时间：
2016-10-01
期刊：
影响因子：
2.2
通讯作者：
Humar, Matjaz
中科院分区：
文献类型：
--
作者：
Humar, Matjaz
综述了液晶微滴作为光学微腔和激光器的应用，并讨论了其可能的应用。液晶液滴通过简单的方法制备，由于其内部结构是通过自组装形成的，因此能够进行规模化生产。由于折射率不匹配或液晶中的光子带隙结构，光被捕获在液滴中，这是由于表面上的全内反射。光限制产生各种光学模式，并且通过采用荧光染料和外部光泵浦，可以实现激光发射。通过施加电场或温度变化，液晶液滴腔在很大程度上是可调的。这种腔体可以用作温度和化学传感器，以及未来集成软光子电路中的可调谐光源和滤波器。[图形]。
The use of liquid-crystal droplets as optical microcavities and lasers is reviewed and possible applications are discussed. Liquid-crystal droplets are prepared by simple methods that enable scalable production since their internal structure is formed by self-assembly. Light is trapped in droplets due to total internal reflection on the surface due to refractive index mismatch or because of a photonic bandgap structure in cholesteric liquid crystals (CLCs). Light confinement gives rise to a variety of optical modes and by employing a fluorescent dye end external optical pumping, lasing can be achieved. Liquid-crystal-droplet cavities are largely tunable by applying an electric field or a temperature change. Such cavities can be used as temperature and chemical sensors, and tunable light sources and filters in future integrated soft photonic circuits.[GRAPHICS].