深层金属光栅结构中石墨烯等离子体调制的振动强耦合

IF 6.6 2区 物理与天体物理 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
Md Faysal Hossain, Wonmi Ahn
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引用次数: 0

摘要

我们提出了一种振动强耦合(VSC)的新设计方法,该方法使用石墨烯集成深银(Ag)光栅实现光谱可达和可控的振动极化态。深银光栅支持由杂化磁极化子和表面等离子体模式产生的强红外共振,促进了与测试分子聚甲基丙烯酸甲酯(PMMA)分子振动的相干耦合。将石墨烯集成到深银光栅中引入离散石墨烯等离子体(GP)模式,该模式与振动极化模式相互作用,提供光谱可调性和对其他静态极化状态的控制。因此,由于尖锐的GP模式,上下极化模分裂成两个不同的分支。通过调节施加在石墨烯上的化学势和改变加入到光栅中的石墨烯层数,可以显著调节光栅模式、分子振动和GP模式之间的混合比例。这种光谱访问和控制极化态的能力使石墨烯集成银光栅成为VSC应用的一个有前途的平台,它有可能使极化态作为极化化学的独特量子态使用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Vibrational strong coupling modulated by graphene plasmons in deep metal grating structures
We present a novel design approach for vibrational strong coupling (VSC) that enables spectrally accessible and controllable vibrational-polaritonic states using a graphene-integrated deep silver (Ag) grating. The deep Ag grating supports strong infrared resonances arising from hybrid magnetic polariton and surface plasmon modes, facilitating coherent coupling with the molecular vibrations of a test molecule, poly(methyl methacrylate) (PMMA). Integrating graphene into the deep Ag grating introduces discrete graphene plasmon (GP) modes that interact with the vibrational-polaritonic modes, providing spectral tunability and control over otherwise static polaritonic states. Consequently, the upper and lower polaritonic modes split into two distinct branches due to the sharp GP modes. The mixing ratio among the grating mode, molecular vibration, and GP mode is significantly modulated by adjusting the chemical potential applied to the graphene and varying the number of graphene layers incorporated into the grating. This ability to spectrally access and control polaritonic states makes the graphene-integrated Ag grating a promising platform for VSC applications, which potentially enables the use of polaritonic states as distinct quantum states for polaritonic chemistry.
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来源期刊
Nanophotonics
Nanophotonics NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY
CiteScore
13.50
自引率
6.70%
发文量
358
审稿时长
7 weeks
期刊介绍: Nanophotonics, published in collaboration with Sciencewise, is a prestigious journal that showcases recent international research results, notable advancements in the field, and innovative applications. It is regarded as one of the leading publications in the realm of nanophotonics and encompasses a range of article types including research articles, selectively invited reviews, letters, and perspectives. The journal specifically delves into the study of photon interaction with nano-structures, such as carbon nano-tubes, nano metal particles, nano crystals, semiconductor nano dots, photonic crystals, tissue, and DNA. It offers comprehensive coverage of the most up-to-date discoveries, making it an essential resource for physicists, engineers, and material scientists.
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