论文标题
Terahertz频率处的石墨等离子体/bragg反射器杂交结构中的素式tamm等离子体中的可调光学双重性
Tunable optical bistability in grapheme Tamm plasmon/Bragg reflector hybrid structure at terahertz frequencies
论文作者
论文摘要
我们提出了一个复合多层结构，由用缺陷层的石墨烯TAMM等离子体和Bragg反射器组成，以实现Terahertz频率下的低阈值和可调的光学双重性（OB）。这种低阈值OB源自TAMM等离子体（TP）和缺陷模式（DM）。我们讨论石墨烯和DM对TM极化反射光的滞后反应的影响。已经发现，由于TP和DM的激发，观察光学行为所需的切换和向下阈值显着降低。此外，通过耦合TP和DM，可以进一步降低开关阈值。我们认为，这些结果将为实现低阈值和可调的光双轴设备和其他非线性光学设备提供新的途径。
We propose a composite multilayer structure consist of graphene Tamm plasmon and Bragg reflector with defect layer to realize the low threshold and tunable optical bistability (OB) at the terahertz frequencies. This low-threshold OB originates from the couple of the Tamm plasmon (TP) and the defect mode (DM). We discuss the influence of graphene and the DM on the hysteretic response of the TM-polarized reflected light. It is found that the switch-up and switch-down threshold required to observe the optical bistable behavior are lowered markedly due to the excitation of the TP and DM. Besides, the switching threshold value can be further reduced by coupling the TP and DM. We believe these results will provide a new avenue for realizing the low threshold and tunable optical bistable devices and other nonlinear optical devices.
