纳米壳
双稳态
光学双稳态
凝聚态物理
克尔效应
石墨烯
单层
材料科学
壳体(结构)
电介质
非线性光学
光电子学
等离子体子
非线性系统
物理
纳米技术
量子力学
复合材料
作者
L. E. De Long,Wenzhi Zhao,Jianbo Li,Meng-Dong He
标识
DOI:10.1016/j.rinp.2023.107034
摘要
A scheme for modulating Kerr nonlinearity and optical bistability (OB) based on a monolayer graphene nanoribbon nanoresonator (NR) and a metallic nanoshell (MNS) is proposed. The MNS is made of an Au nanoshell and a dielectric core. Here, we not only demonstrate that the spectrum of the Kerr coefficient can switch from a four-peaked structure to a two-peaked structure by increasing the shell thickness of the MNS, but also plot bistability phase diagrams in the system’s parameter subspace, revealing that the bistable effect can be controlled via zero-channel, one-channel or two-channels by only changing the shell thickness in a strong exciton-phonon coupling regime. Additionally, the calculated results also show that the material of the core of MNS plays an essential role in tuning OB when the shell thickness is fixed. The findings pave a new way for developing optical Kerr switches and high-flexible bistable nanodevices.
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