标题： 具有超均匀无序反射器的空心芯太赫兹光学波导 显示英文标题

标题： Hollow-Core Terahertz Optical Waveguides With Hyperuniform Disordered Reflectors

摘要： 具有超均匀无序反射器的新型空心核太赫兹波导被提出、制造和表征。 反射器由非周期性定位的介质圆柱体通过介质桥连接而成。 所提出的波导使用三维立体光刻打印机进行制造。 采用有限元方法对所制造波导的光学特性进行了数值研究，并通过太赫兹时域光谱学进行了实验研究。 结果证实，即使使用相对较低的折射率对比度（树脂/空气），所提出的波导仍表现出较大的光子带隙（20%）。 通过改变反射器几何参数可以轻松调节带隙位置。 显示英文摘要

摘要： Novel hollow-core THz waveguides featuring hyperuniform disordered reflectors are proposed, fabricated, and characterized. The reflector comprise aperiodically positioned dielectric cylinders connected with dielectric bridges. The proposed waveguides are fabricated using a 3D stereolithography printer. Optical properties of the fabricated waveguide are investigated numerically using finite element method, as well as experimentally using THz-TDS spectroscopy. The results confirm that proposed waveguides exhibit sizable photonic band gaps (20%) even when relatively low refractive index contrast used (resin/air). Position of the band gaps can be easily tuned by varying reflector geometrical parameters.