通过波纹石墨烯表面的光学整流共振激发太赫兹表面等离子体

IF 3.3 4区物理与天体物理 Q2 CHEMISTRY, PHYSICAL

Plasmonics Pub Date : 2024-07-30 DOI:10.1007/s11468-024-02437-8

Rohit Kumar Srivastav

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引用次数: 0

摘要

利用振幅调制对偏振激光束的模式转换，通过波纹石墨烯表面的光学整流共振激发太赫兹表面等离子体。泵浦表面等离子体对石墨烯表面的自由电子产生思索动力，并在调制频率下产生线性振荡速度。线性振荡速度与调制电子密度耦合产生电流密度，并在调制频率下共振激发太赫兹表面质子。太赫兹表面等离子体的振幅可以通过石墨烯表面的费米能（\text {E}_\text {F}\）进行调谐。目前的研究有可能被用于太赫兹探测器和传感器。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Resonant Excitation of Terahertz Surface Plasmons by Optical Rectification Over a Rippled Graphene Surface

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Resonant Excitation of Terahertz Surface Plasmons by Optical Rectification Over a Rippled Graphene Surface

Resonant excitation of terahertz surface plasmons by optical rectification over rippled graphene surface, deposited on \(\text {SiO}_{2}\) using a mode conversion of amplitude modulated p-polarized laser beam. A pump surface plasmons exert a ponderomotive force on the free electrons of the graphene surface and impart a linear oscillatory velocity at the modulation frequency. The current density develops by coupling the linear oscillatory velocity with modulated electron density and resonantly excites the terahertz surface plasmons at the modulation frequency. The amplitude of terahertz surface plasmons can be tunable by Fermi energy of graphene surface \(\text {E}_\text {F}\). There is a possibility that the current study will be used to utilize THz detectors and sensors.

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来源期刊

Plasmonics 工程技术-材料科学：综合

CiteScore

5.90

自引率

6.70%

发文量

164

审稿时长

2.1 months

期刊介绍： Plasmonics is an international forum for the publication of peer-reviewed leading-edge original articles that both advance and report our knowledge base and practice of the interactions of free-metal electrons, Plasmons. Topics covered include notable advances in the theory, Physics, and applications of surface plasmons in metals, to the rapidly emerging areas of nanotechnology, biophotonics, sensing, biochemistry and medicine. Topics, including the theory, synthesis and optical properties of noble metal nanostructures, patterned surfaces or materials, continuous or grated surfaces, devices, or wires for their multifarious applications are particularly welcome. Typical applications might include but are not limited to, surface enhanced spectroscopic properties, such as Raman scattering or fluorescence, as well developments in techniques such as surface plasmon resonance and near-field scanning optical microscopy.