【摘要】 本文提出了一种由浸没在液晶中的高折射率BaTi03玻璃(BTG)微球产生的可多维度动态调控的光子纳米射流方案。在外部电压的作用下，液晶分子指向矢发生偏转，导致BTG微球周围介质环境的有效折射率发生变化，进而改变了微球的聚焦特性。研究结果表明，光子纳米射流的数量、聚焦位置和离轴距离可以通过改变施加到液晶的外部电场分布来动态控制，浸泡在电控液晶中的BTG微球可以动态产生一到三个光子纳米射流，包括离轴光子纳米射流。此外，我们还探索和讨论了更复杂电场分布下微球的聚焦特性。本研究结果在光镊子、粒子操纵与非线性光学传感器等方面具有很好的应用前景，为集成光子传感器件的发展开辟新方向。更多还原

【Abstract】 A multi-dimensional dynamically tunable photonic nanojet scheme generated by high refractive index BaTi03 glass(BTG)microspheres immersed in liquid crystals is proposed. Under the action of external voltage, the direction vector of liquid crystal molecules deflects, causing a change in the effective refractive index of the surrounding medium environment of BTG microspheres, the focusing characteristics of the microspheres are changed. The research results indicate that the number, focusing position, and off axis distance of photon nanojets can be dynamically controlled by changing the external electric field distribution applied to the liquid crystal. BTG microspheres immersed in electrically contralled liquid crystal can dynamically generate one to three photon nanojets, including off axis photon nanojets. In addition, the focusing characteristics of microspheres under more complex electric field distributions are also explored and discussed. The results have good application prospects in optical tweezers, particle manipulation, and nonlinear optical sensors, and open up new directions for the development of integrated photon sensing devices.更多还原