Ansari Beenish, Nighat Kalhoro Arbab, Shah Shahnawaz, Memon Farida
Opt Lett. 2024 Aug 1;49(15):4254-4257. doi: 10.1364/OL.527902.
Field enhancement of applied electric field is the foundation for the variety of applied domains at a nanoscale level. Traditionally, efforts to achieve field enhancement have required the use of complicated metamaterial-based structures with a transition behavior. Here, the electromagnetic field solution of the TM-polarized wave that interacts with an optical-axis-driven hyperbolic medium with a transition behavior is established. Detailed calculations reveal that such field enhancement can be achieved over a broad range of incident angles (i.e., near critical angle). Definitely, such flexibility of the incident angle for achieving the field enhancement enriches the understanding and provides novel prospective toward its practical realization.
外加电场的场增强是纳米尺度下各种应用领域的基础。传统上，实现场增强需要使用具有过渡行为的基于复杂超材料的结构。在此，建立了与具有过渡行为的光轴驱动双曲介质相互作用的TM偏振波的电磁场解。详细计算表明，这种场增强可以在很宽的入射角范围内实现（即接近临界角）。当然，实现场增强时入射角的这种灵活性丰富了人们的认识，并为其实际实现提供了新的前景。
