Refractive index sensor with alternative high performance using black phosphorus in the all-dielectric configuration
Refractive index sensor with alternative high performance using black phosphorus in the all-dielectric configuration
复制标题
在全电介质配置中使用黑磷的具有替代高性能的折射率传感器
DOI：
10.1364/oe.433195
复制
发表时间：
2021-07-19
期刊：
影响因子：
3.8
通讯作者：
Wang, Lin
中科院分区：
文献类型：
--
作者：
Cai, Yijun;Zhang, Junao;Wang, Lin
从理论上提出了一种基于黑磷（BP）和其他介电材料的红外波段非等离子体光学折射率传感器。由于BP的各向异性，该传感器可以在不同的晶体方向上实现不同的灵敏度和优值图（FOM）。高灵敏度和FOM归因于全介电结构的强磁共振。利用耦合模理论（CMT）对仿真结果进行了验证，揭示了其物理机理。此外，还讨论了样品和入射角对传感器性能的影响。我们的设计利用简单的介质结构和BP单层，在未来的低成本高性能传感器中显示出巨大的潜力。(C) 2021年美国光学学会根据OSA开放获取出版协议的条款
We theoretically propose a nonplasmonic optical refractive index sensor based on black phosphorus (BP) and other dielectric materials in the infrared band. Due to the anisotropic property of BP, the proposed sensor can achieve alternative sensitivity and figure of merit (FOM) in its different crystal directions. The high sensitivity and FOM are attributed to the strong magnetic resonance in the all-dielectric configuration. The coupled-mode theory (CMT) is used to verify the simulation results and reveal the physical mechanism. Furthermore, influences of the sample and the incident angle on the performance of the sensor are also discussed. Our design utilizes a simple dielectric structure with a BP monolayer, which exhibits great potential for the future high-performance sensor with low cost. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement