Orojloo Maryam Heidary, Jabbari Masoud, Solooki Nejad Ghahraman, Sohrabi Foozieh
Opt Express. 2024 Feb 26;32(5):8459-8472. doi: 10.1364/OE.515659.
In this paper, a multi-channel narrowband absorption structure utilizing the Tamm plasmon and Fabry-Perot resonances in the 1-2 THz range is presented. The structure consists of a graphene sheet, followed by a spacer layer and a dielectric-metal photonic crystal. The transfer matrix method (TMM) is employed to evaluate the effect of different parameters such as the constituent materials and thicknesses of the layers as well as the graphene chemical potential on the spectral response of the structure. Simulation results show that the number of channels, resonance frequencies, and absorption peaks can be easily adjusted by controlling the thicknesses and materials of the layers. The absorption value can reach as high as 99.23% for normal incidents. Additionally, perfect absorption of 100% is achievable by changing the angle of the incident light. Owing to high absorption and straightforward fabrication process, the proposed structure can find various applications such as filtering, sensing, optical switches, and thermal emissions.
本文提出了一种利用1-2太赫兹范围内的塔姆表面等离子体和法布里-珀罗共振的多通道窄带吸收结构。该结构由一个石墨烯片层、一个间隔层和一个介质-金属光子晶体组成。采用传输矩阵法（TMM）来评估不同参数的影响，如各层的组成材料、厚度以及石墨烯的化学势对结构光谱响应的影响。仿真结果表明，通过控制各层的厚度和材料，可以轻松调整通道数量、共振频率和吸收峰。对于垂直入射，吸收值可高达99.23%。此外，通过改变入射光的角度可以实现100%的完美吸收。由于高吸收率和简单的制造工艺，所提出的结构可用于多种应用，如滤波、传感、光开关和热发射。
