纳米光子学
小型化
光子学
光学
石墨烯
自旋霍尔效应
光电子学
激光器
光子晶体
材料科学
物理
纳米技术
电子
自旋极化
量子力学
出处
期刊:Applied Optics
[The Optical Society]
日期:2023-10-18
卷期号:62 (30): 8184-8184
摘要
By inserting the monolayer graphene between the balanced gain and loss layers, the graphene-incorporated quasi-parity-time (PT) symmetric structure is established. In this contribution, the introduction of graphene provides a new degree of freedom to manipulate the optical performance as well as the photonic spin Hall effect (SHE). The coherent perfect absorption (CPA)-laser mode still remains in the graphene-incorporated quasi-PT symmetric system, and the spin shift of transmitted light can be significantly enhanced (i.e., up to its upper limitation) in the vicinity of CPA-laser mode, which is 18 times larger than the value of a simple PT symmetric structure. In addition, the excitation of the CPA-laser mode and the huge spin shift of transmitted light can be achieved with the thin gain/loss layers, which will be conducive to the miniaturization of nanophotonic devices based on the photonic SHE in the future.
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